Okay, I'll admit in the past, I never wore a helmet. Rode many horses at a friend's house growing up and hey, it was the 80's. We just never wore them. At the barn I ride we have to wear them so I've gotten used to it. Will I wear one when I get my own horse? Probably. The older I get, the more aware I am of my own mortality.
BUT, to even argue that helmets don't prevent head injuries is just ludicrous. Seriously......do we really need someone to tell us that a helmet can prevent a head injury? I guess football players, racecar drivers, baseball players, motorcyclists are just big wussy women then right?
Wear a helmet, don't wear a helmet. Your choice. But really, there is just no sane way to argue against the fact that your head is more protected when you are wearing a helmet. Period. End of story. It's like saying the sky is blue.
Will a helmet prevent all injuries or deaths? Of course not. Will it prevent all head injuries? No. Will it prevent most head injuries? Yes, absolutely.
And wearing a helmet has never, ever made me or anyone I know less careful. Oh my gosh. If there is anything that made me reckless it was my youth! lol. Wearing a helmet? Uh no.