I just expect people to not degrade me by demanding that I alter my appearance for them.
When people tell you that you should smile more, they are not demanding that you alter your appearance for them. They are saying that they find your smiling face pleasant and request that you display it.
It is easier to tolerate the general stresses of life when one is not hanging around people who grump. Having friends who are happy when you are around them helps ones mood.
Have these people seen mfm’s “smiling face”?