Can you skip a night and not miss it, and does it negatively affect your life? If there's no ill effects and you're not dependent, I don't see a problem.

Sure. But over the course of 90 days, I feel like there's regression/reversion towards the mean. Average a few drinks a week kind of thing.

Skip a night, sure.

Skip it for 3 months... probably not.

Is that how addiction starts?