It's an almost universal feeling among at least half of the population. It's our natural, biological programming. AND it's necessary to the continued survival of the species. It's literally our prime directive, and yet, somehow, we've drilled this idea into the core of our concept of civilization, that it's a sin for a man to look at a woman with lust in his heart.
Now, don't get me wrong, I fully support treating women with respect. There is a misogynistic culture in which men seem to revel in abusing - verbally, and worse - any woman that arouses his libidinal desires, accompanied by an undeserved sense of entitlement to their bodies. I think that if your compass causes you to feel pleasure in the fact of another's existence, then that alone, without promise of anything more, justifies the responsibility to treat her well. And, after all, isn't that a better strategy for befriending her, in the hope of being able to spend more time in her presence?
But treating women with respect also includes not shaming them for courting attention of a particular variety. Especially (but not exclusively) when they're not doing it consciously! Because this is how our species propagates, and it's interwoven into the very fabric of our society. The way women dress. The fundamental nature of dance. Things that they learn even from a young age, before they understand the underlying purpose of it. It's not some evil plan. It's just a fact of life.
And then we make men feel bad for feeling good when their biological instincts respond as they've been programmed to. Even when they exercise restraint, and practice good manners. An implication is posed, that there is some sinister intent at the heart of it all - at the heart of physical attraction, which drives flirtation and courtship behaviors. Civilization has taught us that these things exist to bond pairs together. But evolution knows the real truth: that all those precious babies are being made because men are designed to salivate over women's bodies. We should be grateful for it - not resentful of it. Because, without it, we wouldn't even be.
But we live in a culture where protecting the planet that cradles us, and shelters us from the lifeless void of space, is an unpopular stance. So I guess that's way too logical an expectation for our species. Life is already hard. Why do we make ourselves suffer more than is necessary? For the inscrutable glory of some imaginary character? Intelligence is a myth. We're just dumb, hairless apes. How did we ever make it this far? Oh, that's right - because desire is more powerful than shame. More powerful than any civilizing influence. And if the day ever comes when that is no longer true, then that will be the day that we go extinct. The forces of chastity would do well to take that lesson to heart.