It takes all sorts, but I think live and let live. If a bloke wants to have sex with his bike, and nobody gets hurt, then crack on. However, this f**ker is off this planet. BBC News - Cow slurry fetishist David Truscott given jail term
Playing devils advocate, my understanding is that in both cases it was not so much the acts themselves, more the fact that they were performing them in places where they could be seen or caught (ergo some form of gross indecency) It's my understanding that bike shagger was in a YMCA room, when housekeeping (or whatever) knocked and asked if anyone was in there. When he didn't respond, and Assuming the room was empty they entered to find him riding his bike.