When you have a crash and you hit your head, it's highly unlikely that's the only part of your body that hit the ground and sustained an injury. But afterwards, your head is probably fine while your shoulder or knee or backside is in some serious hurt. When this topic comes up in the Roadie forum, almost everyone says they wear a helmet.

I've already cracked two helmets riding my mtb. and when I'm flying down a mountain at 45mph I'd like to think they'd find my head in one piece after my crash.

I wear a helmet even when I'm tooling around the neighborhood because you never know when grandma or that idiot high schooler is gonna come flyin' around the corner and you've got to ditch or die.

There's a very good, very fast roadie here in Huntsville that's currently not wearing a helmet and I'm sure that if I'm going 45mph down the mountain, he's up over 50 and taking chances that would have me peeing my shorts. All it takes is something small in the road, a bad tire/tube, or even an unexpected gust of wind and BAM! Game over.

Wear the damn helmet.