At least it's a good obsession to have.
Personally I can't ride without one, I just feel like something's going to go wrong, considering I land on my head enough when I do wear a helmet. Also I don't really like riding with riders that don't wear helmets just in case I might have to pick their brains off the floor. I know it's their decision so I don't go on about it or anything. Also, for me, watching videos wear people don't wear helmets gives the video a shift from skill to needlessly dangerous.