Afterwards thought how many people die from some type of blunt trauma to the head. Not like getting into a bar fight with Kimbo Slice but stupid crap like car wrecks, stairs, or falling out of furniture while asleep. If you could extend your life and chance of being permanently damaged by say, 10 years, would it be worth it?
How about a fashionable helmet?
Think of it (seriously): Everyone else wears one. They look badass, are light-weight, and breath nicely. Plus they have all sorts of tricky technology built in, like that dude from Halo. Sun/blast visors, hands-free phone mic, iTunes, face mask for that infant with some sort of nasty cough, even a beer can mount for parties. The possibilities are endless!
People freak out about defense knives, your chance of being destroyed in a car wreck are way higher. Even a bar fight with people wearing helmets would last long enough to evacuate or for the authorities to arrive.
I'm down and absolutely hate ball caps. Who else is in for this?
PS: Or at the least some type of retractable hard-case hoodie for your coat to flip up while performing risky things?

F...yah!