It's primal to get buzzed off the fermented fruit of the Marula tree.
Distilled spirits have no or negligible gluten (gluten is a protein, proteins don't evaporate, distillation is a process of collecting evaporated ferments)
Wine is okay, if you tolerate it. I found that I can't drink it without it ruining my sleep. Some people have no issues. Might be the sulfites.
Beer has some gluten. I can drink it occasionally without issue. I'ts definitely the 20%.
A drink or two a day has been shown to have some benefits, but it's certainly not necessary.
Getting drunk certainly isn't good for you. It's bad for your workout recovery, your liver, and many other of your body's systems. It's fun to do once in a while anyway. Make sure you only do it if you're going to have a really memorable night, like a bachelor's party.