Well, I've bought things drunk as a skunk before. Guess I wasn't sober enough for informed consent to these transactions, so I was robbed, right? No.
If you say you want to do something, and you do it, you gave consent willingly. Your drunkenness only matters of you're blacked out and barely able to stand or utter a coherent sentence.
And it's complete sexist BS that men can only be guilty of wrongdoing in this scenario. Why is a man always held responsible for his actions, but not a woman?