sojourner
Annoyingly Progressive Since 2006
There are several cultural issues in play here.Even if your reasoning was correct (ancients didn't know about sexual "orientation), I still see it falling short or being too simplistic to explaining same-sex acts. If the Jews banned MALE same-sex acts because they presumed that all men were attracted to women and women to man, then why didn't they also ban FEMALE same-sex acts? So gay or bi women could fulfill their sexual desires but gay men can't? This is unreasonable. Seems the Jews were more concerned about the penis which leads me to my next point.
I'm going to borrow from the argument from the design here and say that the Jews looked at sex as serving a purpose - with the male and female genitalia as being a design ( a complimentary one at that) to fulfill that purpose - to procreate or as God said "to MULTIPLY". Remember there was no birth control back then so sexual intercourse was an act where pregnancy would be expected compared to today's recreational use of sex. I believe this is also a likely interpretation if this is what the term "one flesh" refers to in relation to marriage.
First, we have shame and honor embedded in gender identity. Males embodied honor and females embodied shame. So, for a man to "bend over and take it like a woman" was for a male to act shamefully instead of honorably. On the flip side, in order to act honorably, a man would never dishonor another equal (another man). For a man to dishonor another man was to act shamefully.
Second, (and along with the first point), since women embodied shame, they were incapable of acting honorably, and didn't need to act honorably, because the man was the one who brought honor to the household. So women could act shamefully in homosexual acts, and it didn't matter.
Third, the laws mostly applied to the men, since honor and righteousness, as a rule, came to the household through the man. Therefore, female homosexuality need not be mentioned.
Fourth, as you say, there was the whole procreation thing, which was another indicator that homosexuality was unknown as an orientation. If sex was meant for procreation, then a sex act that could not procreate was just unnatural and wrong.
Fifth, salvation (in a manner of speaking) was effected through the propagation of offspring. One's children were one's immortality. When a woman was barren she was said to be without God's favor. So the homosexual act was tied up in the concept of righteousness before God.
So, there were a lot of cultural reasons for the injunctions against homosexuality, none of which are based in morality, so much as they are based in cultural and religio-sexual reasons that simply do not exist for 21st century Euro-Americans.