Originally Posted by aelle
Actually, withdrawal is among the most widely used methods of birth control worldwide (as it requires zero access to doctors or equipment) and it requires the woman to fully trust the man.
But I agree with your undelying thought (I think) which is that ideally each partner would take full responsibility for their actions. And if their aim is to avoid pregnancy, both would take some sort of preventive action instead of simply hoping the other party knows what they're doing.
I once read that a commonly used term for couples who practice the withdrawal method is... parents!