As far as I'm concerned, there's a place for each, and each in its place. That's why I'm in my current predicament

Cannondale Black Lightning - aluminum go-fast bike
Nishiki Modulus - steel go-fast bike (though I'm looking for a 531 framed upgrade...preferably English)
Fuji Palisade - triple-crank distance, fast/rando bike
Phillips - well, ya gotta have a 3 speed
Nishiki Riviera GT - loaded touring (not yet, but it's coming)
Univega Activa - cyclocross/mud/trails/etc. It was my original commuter.
Peugeot - fixed gear
Lenton Tourist - ok...two 3 speeds


And as far as I'm concerned, each one is for sale, pending a better-but-similar bike for a decent price (and pending my current financial situation )
I can go on. Each one has its purpose, and each one is ridden differently at different times and in different ways. The first three I beat like redheaded stepchildren though...