sorry i dont find even proper fitting helmets to be comfortable.
wearing a helmet is a choice, my choice is not to.
ive actually taken a pretty bad shot to the back of the head while snowboarding, with a concussion and a few hours of amnesia to boot. its not something i make a habit of so im not really worried about it.
edit* i want to add that i am in no way endorsing not wearing a helmet, they do provide a lot of protection for your precious little head. but i do endorse your right to choose whether you wear one or not.