Earlier quoted context omitted.
Closed attitudes about sex lead to more teen pregnancy, less opportunities for women, etc. I don't see where it is beneficial. The arguments for sexual prudishness always seem to revolve around "cheapening it" with a heavy subtext of expecting women to maintain sexual purity especially. Most of Western Europe is quite progressive about sex, but yet I can't see how that has been a problem for them. While you may have…
> less opportunities for women What is the mechanism of that? I don't understand how it's necessary to expose broader society (rather than just people interested in it) to unavoidable sexual imagery in order to... have women in the workplace?
Also, who gets to decide what is appropriate? A few years ago, people commonly argued that gay people on TV isn't appropriate for children, using some variant of your argument. That's considered a reprehensible viewpoint now. The same is currently true of depicting trans people on TV, or accepting the reality that they exist. In 10 years, that will be considered reprehensible.
I now live in an area with a more positive view of sexuality, and this carries over to acceptance of homosexuality, gender nonconforming behavior, etc. Sexual repression, empirically, is always linked to devaluing of women and other disadvantaged groups.
edit: Openness about sexuality does not translate into acceptance of nonconsensual or harassing sexual behavior, which is what we should all be concerned about. Quite the opposite. Openness encourages victims to come forward, as has become very apparent in the last few years.