It's a biological imperative Tim
Since I assume this is a potshot at me, I'm responding. Look mate, I can tell you don't know much about this topic. How? Because you're under the impression research into this area stopped in 70s when social constructionism in psychology reached its high water mark. Although those ideas have migrated into the cultural water supply, dominating our culture's pop psychology for decades now, quite a lot has changed in terms of the actual research in the past 50 years. I wasn't kidding when I said thousands of studies. We're talking veritable mountains of evidence and theory in genetics, comparative biology, zoology, experimental psychology, cross-cultural psychology, evolutionary theory, neuroscience, endocrinology, and on and on. For God's sake, they barely even knew what hormones were back then. They were working with the tools they had available: cultural theory. But the field has moved and you should too.
Let me leave you with a bit of intuition:
of course human sexuality is heavily, heavily shaped by biology and evolution. Sexuality is the freakin mechanism by which we, a species that reproduces sexually, spread our damn genes. Yes, culture plays a role, but not as strong of a role as you seem to think. So you might think evolution would just leave basic issues like whether men are highly susceptible to visual cues up to the vicissitudes of culture. But there you'd be wrong. So I repeat: it is
natural and innate for straight/bi men to
want to look at women. Shaming it away absolutely will never work. And pathologizing it is outdated pop psychology.
And for all this bluster that I'm just being a selfish man: no. You guys are off your rockers if you think having a realistic, evidence-based, shame-free understanding of human sexuality is a bad thing. It could not be closer to the opposite. Just a few reasons. One, sexuality issues are biggest cause of relationship problems. It is essential for a heterosexual couple to understand there are differences they will have to work with. Not only is it common sense, but any marriage counselor will tell you that, too. Two, and I know you guys aren't going to easily countenance this, but sexual shaming issues really do effect many men. That is a known fact among psychologists and a common thing in clinical practice.