Let's add up the debates.....
 

Steel vs. Everything Else

Tubular vs. Clincher

Friction vs. Indexed vs. STI vs. Ergo vs. SRAM

Campy vs. Everything

Columbus vs. Tange/Reynolds/TrueTemper/Excell/Ishiwata, etc.

Brooks vs. Everyone else

650B vs. 27 vs. 700

What have I missed?

To drill or not to drill: http://www.bikeforums.net/showthread...stop-this-guy!

DD

Helmets vs. Body Armor

Sidewalk vs. Street

Platform pedal vs clipless vs toeclips/straps

Speedplay versus the world of clipless pedals

ergo vs tradional road bars

hardtail vs full suspension

29er versus 26"

Hulk vs. Andre The Giant

Paint vs powdercoat vs patina

Wool vs. Lycra/Spandex vs. non-bike clothing

I think there is a mary versus ginger ann thread here somewhere . . .

Grant Petersen vs. The world

Internal gears versus derailleurs?

Centerpulls versus sidepulls?

Cantilevers versus V-brakes?

Riders versus wall hangers?

Fillet brazing versus lugs?

You ...you...for got......590's

Italian vs. French

70's vs. 80's

Ebay sucks vs ebay helps me make $$

OA vs Vinegar vs Citric Acid vs Whatever

BBC is crazy vs Need to get over it and Ignore Them

Flippers are evil vs Flippers are evil

Hipsters suck vs I am a Hipster vs I used to be a Hipster vs Hipsters are my best customers!

Hoarder vs Collector vs In Denial

This thread can only end in an argument.

It will won't!

Sheldon Brown vs. umm, ummm, ummmmm.......duh.

Freds vs. the Velominati

Downtube shifters vs. Bar-end vs. Brifters

Cloth tape vs. leather vs. everything else

Gum-walled tires vs. everything else

Let's not forget SoreFeet vs. the world!

Italian vs. French vs. English vs. US

70's vs. 80's vs. 60's vs. 50's

Bibs vs. Shorts

lets not forget about riding with music or no music
and riding with traffic or against it.

Fenders vs. no fenders.
Panniers vs. back pack
You can't lock your bike anywhere, ever vs. riding around town
IGH vs derailleur.
restoration vs preservation

Kopenhagen vs Amsterdam for most idealized biking paradise :)

Amsterdam is freaking hell to ride in people, get over it.