You know what? I'm tired of this argument. It's frankly dumb.
Here is my position: In the current world, the social view of responsibility when it comes to pregnancy is almost entirely on the shoulders of women. Biologically, there's no escaping that women have the burden of gestation and delivery, that's how it works, we can move past that. But socially... pregnancy is viewed as something the woman is responsible for.
Sure, we give lip service to "it takes two to tango"... but realistically, in practice, the man's responsibility is NOT to prevent a pregnancy, the man's responsibility is only to provide financial support for the care of a baby - after it has been delivered. That's all.
When it comes to being responsible for preventing an unwanted pregnancy, that is socially viewed as being on the women. The woman is the one who is expected to obtain a doctor's visit and get a prescription and go to the pharmacy to pick up the pills and take them every single day so there's no breaks and just suffer through the side effects of those drugs. And if something goes wrong, the woman is frequently told "well, you should have been more careful".
Men don't face that judgement.
At the very best, we mouth the words that men should wear condoms. But at the end of the day, there's no way to FORCE a man to wear a condom. A man can say "oh yes, I put it on" and can lie. A man can wear it wrong, break it, it can slip off. And if that happens... it ends up STILL being on the woman to have been more careful - she should have made sure he was using it right. And if she didn't, well, that's the risk that she took.
Men (not all men) dismiss out of hand any situation where the man lied or used coercion or force. "Oh that's rape" as if that doesn't count. As if that doesn't still leave a woman pregnant. As if the woman isn't somehow still stuck with the health risks and the burden of pregnancy. As if saying those magic words "it was rape" makes it not count. Well guess what? To the woman, it still fucking counts. And when only around 1% of rapes actually get convicted, it matters a whole fucking lot!
The entire point of this discussion has been that women bear the burden of both pregnancy and responsibility for prevention, men bear neither. That's the fucking point. It's not about it taking both a sperm and an egg, we fucking know that already. It's about the fact that the entire fucking burden is on women.
And we would very much like men to share the burden, and be EQUALLY responsible for prevention of an unwanted pregnancy. Especially now that we have lost the right to determine whether or not we want to continue that pregnancy or terminate it.