The whole point here is that sex != reproduction. IE social sex constructs, homosexuality, conflict resolution through sex, and just recreation via sex.
> Also, having lots of sex in a 10 day period is impressive, but humans don't have a 10 day heat period. They're in heat all the time. Its not really comparable.
It's true that humans are available for sex all the time - a claim no other mammal can make as I understand it - but chimps and bonobos are also available for sex far more often than they are in a viable reproductive state.
Sexual swelling in bonobos, for example, is almost consistent throughout the cycle.
No:
> I don't consider 'sexually greeting' each other by grabbing assess to be on the same page as sex.
They actually do greetings by involving their reproduction organs.
"Genito-genital rubbing of bonobo females"
https://www.youtube.com/watch?v=HdeAJUxJ7gg
> but humans don't have a 10 day heat period. They're in heat all the time.
Bonobos and chimps don't have too. They do make sex all the time. Google "concealed ovulation." That's the evolved mechanism where female never signals when it actually ovulates. And it's present by bonobos.
Also, having lots of sex in a 10 day period is impressive, but humans don't have a 10 day heat period. They're in heat all the time. Its not really comparable.
I think we can split hairs all day, but I don't think its controversial to say that animal mating and human mating evolved in very different ways. Obviously our closest relatives in the animal kingdom will be most like us, but even they have heat periods.