I live in a US state where weed is legal, and I was discussing this with a friend: it's starting to seem like a terrible idea to drink at all if weed is available and has lesser harmful effects. For me personally, it comes down to that I'd hate for my kids to see me using weed, but I acknowledge that's pretty silly because they've seen me drink (small amounts of) alcohol. I've got a case of good beer in the fridge that I've whittled down over the last 6 months, and in all objective ways I can think of it sets a worse example for me to drink one of those every couple weeks than to use a similarly moderate amount of weed. My upbringing still insists that weed is a much worse example because it's a "drug".