Most guys aren't capable of facing the fact that their parents consented for them to be brutally mutilated without anesthesia as a helpless newborn. So they cope, they convince themselves the procedure is actually a good thing, and the cycle of abuse continues.

Of course they get angry when anyone challenges the lie they convinced themselves of, because those guys aren't ready to admit that their parents broke their dick. And the ones who've done the same damage to their own sons get even angrier, because how can they admit what they've done and still call themselves good parents?