I don't see why they should get heated. I wear a helmet whenever I am on my bike, does it make me better than those that don't? Certainly not. I choose to wear one, others do also, others choose to not wear one. Why is that so difficult for people to comprehend?
They always get heated though

At least this thread has not gone that far yet but I am sure it won't be long.
I don't wear a helmet and I have no problem with anyone that does, each to their own.