I don't collect bikes to collect them (though that's cool if you have room); I collect bikes to ride them.

My bikes reflect my riding style. They all become touring/commuting bikes, because if I don't commute on them they don't get ridden much. Also, if I can't ride occasional dirt or gravel on the bike then I won't ride it much.

I maintain them all the time; one bike will head into the basement for maintenance and/or modification, and the other bikes fill its spot in the rotation.

I have five bikes:
1) Touring: '97 Rivendell Road 650b conversion (lugged 753 steel) w/ drop bars, 3x10 bar-end shifters, fenders, dynamo lights, front and rear racks.
2) Gravel/touring: '88 Schwinn KOM rigid 26er (lugged Prestige steel) w/ drop bars, 3x9 bar-end shifters, dynamo lights, front and rear racks. (currently torn down and headed to the powder coater)
3) Gravel/cross: '13 Foundry Auger disc (carbon fiber) w/ drop bars, 2x10 SRAM double tap, fenders, dynamo headlight, frame bags.
4) Fat/MTB: '14 Specialized Fatboy (Aluminum frame/carbon fork) w/ Jones Loop bars, 2x10, SRAM grip shift, fenders, frame bags and rear rack.
5) Roadie: '97 Giordana XL-ECO (lugged Excel HT steel) w/ drop bars, 2x8 Sachs/Campagnolo Ergopower, small handlebar bag. (this wonderful bike is for sale because I never ride it. 700 x 27 tires are too skinny!)

I had a decent Cannondale headshock MTB ('04 F400) but it was completely replaced for trail use by my Fatboy, so the Cannondale is on loan to someone else.

I have a couple project bikes (mediocre hybrids) awaiting some refurbishment before I sell them locally. I have a couple other junk bikes awaiting donation at the local bike co-op.