I do have one suspicion. What maybe happening is, instead of feeling guilty the next day, the young woman might feel anger because she discovers she had sex with a man whom she would not have consented to have sex with, under other circumstances. When it comes down to it, the mournful cry, "But she let me do it," is just not a defense.
I've had sex with a girl who I never would have had sex with sober, and I was very drunk. She was essentially sober, although, she might have had a drink or two. I suppose if I wanted to feel angry about that I would be entitled to that feeling. However, I don't think I should be allowed to denounce her as a rapist.
That is your call. If no one took pics and you didn't wake up with a shoe polish beard and mustache, then no harm done. It's not really fair to expect everyone in the world to be so amiable about being violated.
I wasn't violated. I had consensual sex and I was drunk. People in this thread have tried to turn the conversation into what an ideal world would be like. Ideally, people wouldn't have sex when they are drunk. I don't anymore. After a few times you learn it's never good. Perhaps people who are in a relationship and there is some sort of understanding and they get drunk and have sex, well, that would still be fine in my ideal world. But in the real world people have sex after they have been drinking quite frequently. It's not rape just because I woke up the next day and said to myself "That was a mistake and would have never slept with this girl if I hadn't had so much to drink." That isn't rape.
Now, I have a friend who actually was violated. According to a mutual friend that witnessed it happen, the friend had essentially passed out after heavy drinking and the girl whose house it was took him back to her room and had sex with him. It happens to guys too. There was a guy at my college back around 2009 that made the claim that he had been raped because he ended up having sex with a girl who was rather heavy and he was very drunk. He was ridiculed, but of course he would be, even though perhaps he really was too drunk to have been able to consent. I suspect he wasn't though, and just didn't want it to be known that he had slept with that particular girl. But I do think that illustrates the sexual double standard that exist in society where a man is always assumed to be happy to have sex and a woman is always assumed to want to withhold sex. This sexist double standard is at the root of slut-shaming. Hell, girls who I knew were involved in campus sexual assault activism dismissed his claims of being raped out of hand. When I asked them why, I was actually told that if a drunk man and a drunk woman have sex, the man has always committed and act of rape.
Another phenomenon where this double standard is clear is, as I alluded to above, is slut shaming. Men are "allowed" to have ravenous sexual appetites and having multiple sex-partners doesn't result in the same sort of social stigma as if a woman does the same thing. The other side of the coin is that a man who is unable to have sex is usually branded as inadequate or pathetic. Look at sex toys. In general, sex toys for men, like "vagina pockets" are not very openly talked about. I would be very surprised if any of my friends would admit to owning one, and if they did they probably would be ridiculed. On the other hand, dildos and sex toys for women are pretty much not considered to be a sign of inadequacy or a source of ridicule.
Anyway, my point is that simply being drunk does not invalidate consent.