It takes both a man and a woman to make a baby. Birth control is available for men as well as women. Some folks don't believe in abortion for religions reasons.
If a guy just wants a good cum, that's the risk he takes, just as with the woman who wants a good fuck.
There is nothing medieval here but your thinking.
Women are making the choice, and you suffer because, they chose to get pregnant, give birth, and sit on their ass, while the man picks up the tab, for their self indulgence. No justice there.
Religion is ignorant superstition. Medieval is too good to describe religion, it's really late stone age, delusional brain dysfunction.