Maybe I'm ignorant. I just thought that while women don't seem to be taught from youth about their options, how to respond, etc I thought that boys/ men were taught from multiple places/ people that rape is wrong/illegal. In all fairness, maybe that's to broad an assumption. And I'm speaking specifically about the modern U.S for the past 60 years or so.
I would say that not all are. Very much a cultural thing and also influenced by peers. Many guys (that I know of at least) were taught that no might mean maybe, and to keep pressuring the woman to see if she changes her mind. Maybe its not explicitly said, but strongly implied? Not sure because I was raised differently.
Men are taught to be the pursuers, the agressors. But many aren't taught the fuzzy line not to cross. So maybe they know that rape is bad, they may not realize the nuances of what is ok and what isn't.
I've mentioned before, its worth saying again. Every woman that I know well has been sexually assaulted. Every one of them. From 90 to 14.
Obviously not all men sexually assault people- that would be preposterous. But enough do to make most of us wary of all men, or at least skeptical until we get to know someone.
And to the point of 2 people to drunk to fully consent... that would be the number one reason to not sleep with strangers. Because if you're that out of your mind drunk, you may not be able to articulate what you want and don't, much less understand their boundaries or be safe either.