there had to be something basically shameful about sex for it to be deemed (excessively) shameful by religion...so why didn't religion say that eating was shameful? or walking? it isn't just a random thing, where there is smoke there's fire.

yes religion does make a huge deal out of something small...but something small is still something...there still is shame in sex...i say that meaning just random emotionless sex. Sex between two consenting adults who both want it (in opposition to wanting money that comes with it) is a very beautiful thing that is being stigmatized by religion...i don't think prostitution is though, prostitution is shameful because of natural morals...like how nobody has to teach someone that killing is wrong, everyone sort of instinctually knows it (this is all just my opinion of course).