I grew up in the 80s, alcohol was very prevalent among all economic levels for teenagers.
And the idea as a teenage boy was that drinking with girls might cause them to lose their inhibitions. We were that stupid to think that a couple of wine coolers was going to help cause some type of orgy, but we never thought about using alcohol to incapacitate someone or to make them lose control. And we weren't looking to take advantage of any situation, but there was this thought that alcohol would help us lose our virginity. Mostly, getting drunk with the girls we knew was about laughing a lot or doing something stupid like skinny dipping at the most. I remember drinking a few wine coolers with my sophomore crush and then us kissing for like a half hour on a walk, we ended up dating for a year, not sure we would have gotten together had we not both been a little uninhibited that night. It's part of our culture for young people to experiment with alcohol and sexuality together, good kids can keep it innocent enough.
But we all heard stories about other groups of kids where it was something different. Where girls were pressured into drinking more than they could handle, where they would end up waking up half clothed. Where they would do things that were embarrassing. Or worse, where they would wake up not remembering anything but knowing they had been raped. There are predators from a lot of socio-economic backgrounds, sounds like Kavanaugh and his friends were some of the absolute worst kind.
I still remember a girl in my high school who the story went got drunk and had sex with 3 or 4 dudes. It never occurred to me until many years later that she was probably the victim of rape.