And it was a necessity for Homo Sapiens to emerge and conquer the world some 300,000 years ago. If women did not have 8 to 10 pregnancies in their lifetime (between 13 and 29) there would not have been over three children brought to adult procreative life per woman, thus going against one natural rule: to increase the population beyond the available resources of the zone, so that they could expand.
The point here is that in Biblical time, and what’s more today, this survival emergency is no longer needed. In fact we are overpopulated and we need to reduce procreative sex with all kinds of means, turning sex into pure pleasure.
Then the concept of deviate, deviation or whatever is just pure hypocrisy based on some taboo-istic OCD.