Yeah I also find that interesting. I suspect there is a genetic component. Certainly a big part of it for me is, I just make sure to ALWAYS (well in college this wasn't always true) wait until night time or at least the evening to start drinking. I have gone through periods of getting drunk (like 6-12 drinks a night) every night for long periods of time, and I have never had withdrawal from alcohol. But alcohol has a short duration of action, so the whole first half of every day your body has sober time. if you drink steadily throughout the day, every day, you're asking for physical dependence. And then, because of kindling, future dependence is much, much easier.
A good friend of mine drinks every single night without fail, at least a 6 pack of 7-9% ABV IPAs or the equivalent. He did so every day, maybe missing a day a couple of times, for 12 years, age 18 to 30. Then he was like holy shit, I'm probably addicted as fuck, I'm going to try to take a week off. He took a week off and he said it wasn't hard and he felt better than he had in years, no withdrawal whatsoever.
I find that as the years have gone on and I've had dependence issues with various gabaergics or similar (namely, phenibut, GHB, and recently, minor benzo withdrawal), I get much worse rebound anxiety the day after getting drunk. I used to not even get hangovers, then I started getting hangovers and they got worse and worse, and now it's a state of anxiety that can be pretty intense, even if I don't get much of a toxic-style hangover.