I'm pretty much the same as you. I really like beer and wine and cocktails, but the bad sleep and feeling shitty the next day after even one drink isn't worth it. Thirty years ago hangovers were rare and could usually be ended with a cup of coffee, tylenol, and lots of water.

The next thing I have to back off on is sugar. It doesn't seem to mess up my sleep like booze, but I definitely notice it the day after I have that big bowl of ice cream or giant slice of cake. A big enough sugar binge feels pretty close to a hangover for me now.