Why do some men want to be cuck?

I don't understand whats happening some men these days. I posted a serious post about looking for a girl to marry or date to marry kinda thing. And a guy pinged saying he wants to marry me wtf. And if i dig his profile it says he is a cuckold looking for a girl to marry😭. I'm really trying to understand here why are some men like this?...i really don't know whats happening already with the pseudo feminists fucking up men's mental health on one side and on the other side we have these simps and cucks who are directly or indirectly boosting the egos of feminists. Either way is the normal good men are the ones who are affected by this. Because of ego boost these feminists women think there are the prettiest women in the world and start demanding unrealistic stuff in marriages.