Well a couple of beers could possibly not put you over the limit the law set, if it does and you drive, you're an idiot. Of course there's degrees of drunkeness, but if me and my family are driving, I don't give a crap if the guy thinks he's ok because he had a few beers. Don't be on the road if you're impaired even if it's slightly over the allowable limit.
You mention you know someone killed because of looking at a cell phone. Is looking at your cell phone while driving an issue for you?