i've had my Trek for 15 years. when i bought it, everyone else i knew was buying Specialized, Fat City, Gary Fisher and Cannondale... now everyone is buying Trek. hey! i'm a trend-setter!

but yeah, it's because everyone and his brother has one. folks are making the popular = uncool assumption. but who cares? if your gf likes it and it fits, just ignore pretentious jerks like you described.