Being politically correct all the time is similar to being brain-dead:
What a great lecture:
Bad. Buttons that are located in a weird place:
Bad. Buttons that make fingers bleed:
Good. Those that aren’t any of the above:
Excellent. Those that remember that you pressed them:
Obviously, all buttons should be responsive to touches in gloves. There should be no buttons on trains that only go through a closed space.
Added on May 29, 2020: Buttons should not be used during the coronavirus pandemic.