Originally Posted by
Nachoman
When I used to bike to the park with my kids,
they would not infrequently forget they had their helmets on just start playing.
Helmets may look funny, but they're just not that uncomfortable.
I hate to admit it, but I frequently go to take off my bike helmet and only then realize that I wore a baseball cap instead. Apparently, at some point in the ride they don't feel that different to me
So there's yet another answer: possibly some people forget that they have it on! Now I have to wonder whether I've been one of those, walking around with my helmet on, and didn't realize. Very possible.