Why our private parts will have to be hidden?And why those are to be called as "PRIVATE"?? Why? why? why?

Question

Why our private parts will have to be hidden?And why those are to be called as "PRIVATE"?? Is it that for those are for giving birth to new men and women...is it not a quite riddiculous and lame logic cause?,we all know what we have in our body ,the male organ the female organ and how those look,so why do we need to hide those,is it for those will be seen by all other and they juzz any indovidual by those organ and they will like or love or marry for it's size and appearance,if so then it's a complete hypocracy..Models,actors/actresses and pornography artists show those organs in front of the camera and let others view those only for money and for nothing,but not in elsewhere..so it's also another form of hypocracy because they hide those organs and then expose and let other peoples see thoseso that they can earn money,so it's also a commercial-hypocracy and one kind of "cheating" in the form of "acting",doctors can see those,touch those,cut and repair those,so why not we all?
why?

Answer 1

It's just a social convention,nothing other than that,it's a cultural and social modesty in civil rules and as it is a convention it can't be termed as any hypocracy and that's all about it.

Answer 2

It's just as a result of how we began to want to protect our bodies from the cold, scarring etc. And now clothing has evolved because we don't necessarily need clothing in the heath of the summer but we still cover ourselves for modesty.

We've got used to being covered and now consider those bits of our body we always cover to be our private bits that we rarely show and are embarrassed to show. It's just a cultural thing we've gotten used to.