As it pre-dates our knowledge of sperm and ovums, I think there’s another aspect to this revealed in the English language (and likely others), where semen is referred to as “seed”, and wombs are referred to as “fertile” or “barren”. The view being that conception is like a field, where you plant a seed and the ground nurtures it. You can also take a seed and germinate it and grow it in water (for a while, depending), so if you take the man’s “seed” and give it a place to grow, won’t it grow into a person because it’s a seed?

Fraternal vs identical twins.

I had these. They had the option to rent, rather than buy, for something like $10/month. Sound was amazing, maybe the best I’ve heard, apparently that funky in-ear thing allows it to customise the sound profile to your eat canal. Build quality was superb. After a couple of hours or so they’d start hurting where it pressed inside the ear. I stuck with it for a couple of months in case I could adapt, didn’t, so sent it back and cancelled subscription, all with no drama or regrets. Still miss the quality of the sound though.