Thoughts on the fairness of period cramp simulations and why most men fail them?

I feel that most of the time, the failure is because of

A: unique type of pain

B: shock factor

C: low pain tolerance

I feel that if once a month someone punched my balls for 2 weeks straight, after 2-3 days I would get used to it, obviously uncomfortable and annoying, but not like world ending and enough to make me not care about others opinions.

not trying to be mysoginistc, just ignorant