Earlier quoted context omitted.
> The answer is "evolved intuition", like it or not. Maybe. A lot of what we assume are innate sexual preferences are actually determined socially. No one was talking about "body count" (at least not publicly) ten years ago. These days, a full-figure on a woman is considered attractive, but in the 1990s, being skinny was in vogue. Insofar as an attractive partner is a status symbol, the definition of "attractive" cha…
> No one was talking about "body count" (at least not publicly) ten years ago. People have been talking about virginity and monogamy for 1000s of years. Men want to know that the children they raise are their own. It might have blipped a bit since the invention of the pill but women cuckolding their partners has been frowned upon world wide for a very long time. Sex before monogamous marriage has historically been a…
Turns out, yeah, every one of those men's father was who they thought he was. Our Y DNA was the same, minus the mutations you'd expect over 400 years on separate branches.
That humans make a big deal about parentage and infidelity, doesn't mean humans aren't faithful. Apparently we're the most faithful of pair-bonding species by a big margin.