Why is sex virtually taboo in some countries?

[Ki Ki]

I know that for my culture it's more like a classiness thing.
Like girls that sleep around are considered a lower class sort of thing and no will want to marry you. :3

I might not be from your culture, but I also would've never wanted a girlfriend who is...uhh, very experienced in bed. Nothing against someone as persons if they choose to have one-nighters and enjoy them - it's just something I personally find opposite to attractive.

Was what I just said considered as bad and tabooish towards sex? :> ...j/k (ish). :)

Ah you have a point.
But some guys find that veri hawt. >_<

As in girls have to be pure, quiet, good at cooking, cleaning. Like in the old days!
It's also more a religious thing. Like the third precept. :)