[blacksmith_tb]

I think that's a false equivalency - sitting on the bike is not the same kind of sitting as in your office, unless you get a lot more cardio in at your desk than most of us. If you're worried about your erection (or labia), saddles with cutouts are easily available (I like Terry ones myself). And clearly cars are dangerous to runners too, who often rock reflective garments, LED blinkies, etc. much like cyclists.