Yeah, I name my bikes. It feels more personal, makes it more of a friend.

I named my Trek 520 "Buckley" after Jeff Buckley the late singer/songwriter
I named my Jamis Aurora - "Starbuck" after the female lead in the modern re-make of Sci-fi classic Battlestar Galactica.

I think the bike either seems male or female because as humans we anthropomorphize alot of things - cars, bikes, wind, rain, etc. Other than that, I can't explain anyone else's reasons but my own. I find it comforting and charming.