There are a few reasons to limit your alcohol intake-
It dehydrates you, it is empty calories, pre-mature aging, can cause irreversible damage to your liver and brain.
If you have a problem with alcohol and want or need to avoid it, then do avoid it.
I do have a drink or two, here and there, but I try to limit it to that. If I am going to drink more than one drink at a sitting, then I will drink 8-12 ounces of water between drinks, to prevent dehydration and the nasty feeling in the morning that excess alcohol can sometimes cause.