I never 'got it' I guess. What reward is so great about riding a bike? I don't see any...Like I said, I don't get it....I have seen too many people mangled and ruined for the rest of their lives to ever think about owning a bike.
The logic is similar to any dangerous vice. Why do people smoke? They know it will kill them, as opposed to a motorcycle where there is a probability of being seriously injured. The enjoyment/low cost of riding outweighs the risk for the rider; otherwise they wouldn't do it.