One of the problems is that a good many people become intoxicated but don't necessarily know what they are consuming or how much. How many beers does it take for extreme intoxication to become foreseeable? Is it five, 10, 15, 20, 25 or 30 beers? I don't know. That's why the people consuming the substances have to be experts.
As an advocate for women's rights, I'm always concerned about the risk that someone who puts themselves in this type of situation and loses control over their behaviour could become violent towards a woman or someone else.