gugie 

2 aluminum, Cannondale early road frame, SBI Globe commuter, recently sold
1 Specialized Allez carbon fiber, tube & alum lugs. Tube separated at BB after 2 years, replaced with warranty.
Too many steel frames to count over 4 decades

Ti seems like the ultimate material, roughly the same properties of steel tubing with less weight and no corrosion. It was synonymous with unobtanium when I started out riding, very few people knew how to make a frame out of it at the time. Seems like more frame builders are getting into it, perhaps some day I'll get one.

mtnbke

A lot of my bicycles have been too small. I can force fit a 60-63cm bike, but it just isn't particularly a good bike fit, and what I have to do to get the bars proportional to my seat post extension makes the bikes look ridiculous. However, that's how Zinn likes to build his custom BIG/Tall bikes with head tube extensions and a ton of seat post. It makes for a stiffer bicycle and eliminates "no hands" speed wobbling to build a bike like that, but I prefer more proportional sized bikes now. With our tandems we don't have a choice, unless we go custom, and I'm not willing to do that. In my marriage and in another relationship lasting over eight years I don't have 1,000 miles total on the four tandems I've had. A custom tandem just doesn't make sense. Now with two young sons I'd do a custom triple, but not a tandem. I can't see our family getting a lot of time on the tandem going forward, with the kids.

For me fit is more important than frame material, though on bikes that I've owned that do fit, the frame material of choice has been aluminum. I used custom cranks on every bike (190mm on the 29er, 200mm on the tandems, and 205mm on the touring bike I'll tour with, and 200mm on the others I'll just ride). I can flex most any frame visibly easily, even oversized aluminum, if I want to.

What I've had:
Titanium (Dean, and Lemond)

Steel (Pinarrelo, Lemond, Olmo, Gunnar Crosshairs, Curtlo custom, Trek, Santana tandem, Burley tandem)

Aluminum (Giant road, Gary Fischer mountain bike, Klein road and mountain, Cannondale 26" mountain bikes,29er mountain bike, Cannondale road bike, lots of Cannondale Sport Touring bikes, Cannondale Tandems)

Carbon - I don't recall ever owning a full carbon bike. I've ridden them, but I don't' think I've ever owned one. Just bikes with carbon rear triangles and carbon forks. Had those Spinergy cool four bladed carbon wheels (26" mountain bike) back in the day. Coolest wheels I've ever owned. Not very light though.

Now that I've kind of restricted myself to properly fitting bikes (except for the tandems) I buy a lot bikes for my wife to try. She'll transition from bike to bike, just to give me something to look for. Big size bikes are hard to find, and I've moved past steel, even after having the custom Ox Platinum Curtlo.

repechage

I hope it was not on purpose.

Steel almost all, one aluminum mtb. And one ti road bike way way back, long sold.
Thinking about a vintage Klein, or Cannondale.
If I had kept racing, then I would have bought a Klein in 1976.
I got to test ride a very early example the year before, that was the future, at least I felt for Criteruims.

Maver71

Currently I have-

1 aluminum mountain bike (Diamondback-6061) I hardly use

3 steel road bikes (Lemond-Reynolds 853, Motobecane-Vitus and Schwinn- TruTemper)

Looking to add another steel road bike maybe with Columbus tubing

Choke 

I've owned two aluminum bikes, both MTBs. All the road bikes have been steel.

jetboy 

id like to try a bamboo bike.

junkman71

9 steel if you dont count the BSO's I rode for many years
2 aluminum

the 3 I have now are all steel bikes

gomango

Two Litespeeds and two Merckx

Too flexible in the stays and bottom bracket shell.

Ghost shifting

Just not my cup of tea.

Attractive bikes though.

MiloFrance

Mountain bikes in Alu (full sus) steel (custom built Foco) and Ti (Cove Hummer)
Cannondale and Viner alu roadbikes, all in the past except the Foco.

All steel now except the Colnago.

busdriver1959

Started out on steel. Tried aluminum and titanium. Now I'm back on steel. Currently 5 modern steel bikes to choose from. Just came back from a trip where I rented a Bianchi carbon bike for 6 days. I can now say, I will never buy a carbon bike. Hideously harsh ride. It's true- steel is real.

SJX426 

Never owned anything but steel.

Would consider Ti, if it was the right one.

Would take a CF if given to me.

Least interest in Al.

daf1009

OK...from memory...

I had a CF bike (Specialized Tarmac), but it is now part of my history...

I currently have two aluminum bikes, Pinarello Surprise and Schwinn Ontare. The Surprise has a CF fork and I ride it regularly. The Ontare is full on aluminum...it gets ridden some...more as part of collection than full time rider.

To my knowledge, I have never had a titanium...

And...the rest...well...the rest are steel! And you can see my signature line...

This is only counting what I would call "My Bikes"...not the bikes that I buy for flipping and/or parting out.

cycleheimer

Aluminum. A Giant Defy 1 road bike, a Cannondale M600 mountain bike, and I just bought a new 2015 flat bar road bike with an aluminum frame. I personally feel more confident riding steel, though. Plastic isn't in the cards for me. I would feel more confident on a steel framed bike rescued from a scrap pile than I would on a carbon fiber bike new off the shop floor. The idea of "catastrophic failure" on a carbon fiber bike bothers me for some reason. You don't have to constantly examine steel frames and forks for cracks. Fuggedabouhtit.

USAZorro

I have test ridden an aluminum bike. It wasn't terrible, but I definitely noticed the vibrations from the chip seal a lot more. Paying more for a slightly harsher ride that is ugly too? Not going to happen. Steel is what I have, and what I expect I always will have.

Chrome Molly

3 al (firm rides, especially the SR400 cannondale, the ST series cannondale rode nicely)
1 ti (Mtb, so not sure if that counts)
2 carbon (1 lugged that was very whippy but comfy, 1 more modern which was nice but felt a little detached from the road)
1 al with carbon stays (rode nicely and was light, my brother now owns that one)

miamijim

4 titanium
too many aluminum to count
5 or 6 carbon?

iab

I would like to think so too. Only time she ever insisted I should get a new bike though. Guilt works wonders sometimes.

krue1971

Aluminum, steel and titanium here.

top506

Everything is steel except the Vitus, although there's room in the barn for the right Cannondale, Klien, or nice Ti bike.

Top

nlerner

My Ti Merlin with CF fork is the lightest bike in my fleet and the best climber. If it would fit a 30mm Grand Bois tire, it would be perfect, but 25mm is its max.

rhm

I have had five aluminum folding bikes... recently broke the frame of the fourth one, in exactly the same way as the first three, and promptly replaced it with the fifth one. Same make and same model.

I've also had an aluminum road bike, an aluminum road bike, and an aluminum mountain bike. Still have that one, actually.

I still have an aluminum folding bike and a magnesium folding bike that are more or less retired.

The rest of my bikes are steel.

iab

Isn't that the definition of insanity?

Dave Cutter

As of this morning.... I own one steel and three aluminum. The numbers of bikes, and the bikes I own change from time-to-time. But my newest daily rider is aluminum as is my back-up/rain bike.

I always keep a steel C&V bike. Although I often get fickle with the Craigslist selection of vintage bikes in need of care. So I am often buying and selling my vintage ride.

I also own a Trek 1400... bonded aluminum.

vtchuck

5 steel, 2 aluminum, 2 CF

(1 steel & 1 CF currently for sale)

Link

jimmuller 

Your first road bike was aluminum? Then, ah, with all due respect, no you haven't! (Just kidding.)

My bikes are steel, steel, and steel. All the rest are steel.

If I could convince my sweetie I'd consider a custom Ti tandem from Seven. But that ain't gonna' happen.

I'd consider one of these just because:
https://renovobikes.com/