system
Given the following post, respond as if you're commenting on Reddit:
human
Being open about sex...

Why are people so unsettled by the topic of sex? Context: I left Christianity a little while ago, and recently I have begun thinking about the almost pathological fear that our society has of sex and how this fear manifests itself (fear of sexual education, condemning those who are open about their sex lives, thinking that sex is dirty or inherently crude/promiscuous). If there is any biological or evolutionary basis for these phenomena, can someone please tell me what it is? Thanks!
gpt
>I left Christianity

Which sect or denomination? Catholicism, for example, is an entirely different kettle of fish from say Protestantism. This also changes depending on the majority status of your said 'Christianity'. 

>that our society

Which society? There are many. 

It's quite difficult to answer your question properly and provide you with the best answer without specifics.