I’m a cis heterosexual male. I love all things about a women’s body, but I’m mature enough to not pop a boner just because I see a naked attractive woman. Like is that honestly hard for some healthy adult men?! Like if that woman and I are making sexual advances towards each, game on! Otherwise, what’s the big deal?

You are talking about culture not purely biological. Before clothing men weren’t walking around with erections all day. Same thing goes for many other cultures. The obsession with seeing anything naked is because we treat all nudity equally when it’s not. I see it as a personal control and character issue that is ingrained in western and Abrahamic religions areas.