Yeah, same question for me, too. Why not just wear it?
Honestly, I know it seems silly, there's always the whole, "Well, I could die walking across the street," controversy.. But don't you value your life? Seriously, why not just wear it?
I know this doesn't have much to add to the argument, because it's not riding, haha.. but there's a snowboarder that I used to fallow, and he recently fell WHILE HIS HELMET WAS ON, and got a pretty serious brain injury. He spent four months learning to walk and talk again, trying to regain his sight, and he is still regaining his short-term memory. If he wasn't wearing his helmet, his doctors are sure he'd be dead. And if he wasn't, I don't even want to know what sort of state he would be in.