Hello there
It was my wife featured on the show (the lecturer who said that she'd probably be dead without the helmet). Sadly they cut what she had to say so the message didn't really come across. Mac, in her case it is not at all hard to conclude that she would have been far, far worse without the helmet. There was a rock on the road, about a centimetre and a half across, that made a big dent in the lid. Without the helmet I don't think anyone can doubt that it would have gone straight through the side of her skull, meaning that in addition to the other serious injuries she sustained she would have had a dirty depressed fracture in her skull, with lots of bits of bone and grit pushed into her brain. We were extremely lucky: the injuries she sustained should have left her in a hospital for the rest of her life as they were. Had she not worn a helmet I think she probably wouldn't have died, but the most likely outcome is that she wouldn't really have lived either.
Regarding the comment that it's selfish to ride without a helmet, well in my opinion that is true. Having been left coping with a toddler and a baby while my wife spent six weeks in a coma and then six further months in hospital, I can tell you that anyone who doesn't use simple and reasonable precautions to reduce the probability of their family members having to go through similar is indeed selfish. Of course, this depends on whether you think that wearing a helmet is a reasonable effort, and I can understand the argument if you think it's not - I know about the lack of real hard evidence either way on this question, and I agree about the eye-watering foolishness of the comment by the other lady about "forget about research" or whatever it was. Nonetheless, I disagree with you - just remember though that what you're risking isn't a clean death, it's spending the rest of your life having someone else wipe your bottom and not remembering who your children are or what you did this morning. Head injuries don't just destroy individual lives, they destroy whole families.
Rob