I think its more the way humor is used/intended.

The problem is that people use humor as a weapon. If you fall those people point a finger at you and laugh while calling you an idiot.

Others use it as a way to deal with stuff or in general just see it as something to make light of a situation. Those people would also laugh but they would come to your help, ask if everything is alright and would help you up. While knowing that everybody falls down sometimes and that it can funny.

Everything can be funny with the right people and that helps to cope.