No apology required. I imagine your mother and I would get along famously!
I agree that homosexuality was more common in certain circumstances in classic Greece and Rome. However no one today would agree with the abuse of children, and no matter the platonic definition, we don’t give children the right of consent to sexual acts by adults upon them. That is violence.
As the the other two main types of Paul’s day, they were temple prostitution by young males who feminized themselves for sale. This was thought to be a violation of the stoic concept of natural law, wherein men were by definition superior to women and it was unseemly to act like a woman. Secondly, the call-boy took the submissive position and this too was thought “feminine” and thus unnatural.
If you read Paul, you will see that he refers to unbridled lust a lot. It was thought that homosexual behavior was a choice, not an inborn condition or predisposition. It was thought that some men and even some women were so overcome by lust that they were not satisfied with the “normal” behavior of male and female, but had succumbed to their bodily desires. Since at that time in Christianity, as in Stoicism, the denial of bodily desire was considered virtuous, Paul argued against it. But remember his remarks were limited, and included in a long variety of behaviors that were not sinful themselves but evidence that the person had succumbed to sin in general. These “codes” were common in both the Old and New Testament, and they are nowhere ever the same. There is no One list.
But I think you are right that the human body was not a thing to be covered in the way that we think today. The Olympic games I believe were conducted by nude athletes. And the baths were common, though I think usually restricted to each sex. Not having the modern facilities we do today means that people looked a bit differently at nudity and so forth, not necessarily more pruriently either. You learned to see but not see if you get my drift.