I know I had to wear one for a couple of hours straight at a museum today and when I went out to the street and took it off I felt like a bad person for taking it off even though that's normal, within the rules and I don't even agree with the mask policy at all.

Masks are addictive, probably because they act as a security blanket. They also act to hide your emotions and there's a part of your brain which seems to like that.