My wife is a triathlete, and as much as I try to get her out more to cycle, she is turned off by several aspects of cycling.

Mostly, it's the d-bags we encounter on group rides. She is also turned off by the hyper-macho attitude that a bunch of skinny guys in spandex with shaved legs display.

She also thinks that the sport tends to attract some anti-social weirdos - which should surprise no one on bikeforums.