I've always found it a bit hypocritical to not allow more bars/pubs/dispensaries in local neighborhoods (at least in the US) because of all the NIMBYs, which makes greater chances that people go out, drink, and drive back home even slightly over the limit.
That, and if you read the arrests for people who actually cause heinous harm, they are far over the "legal limit" for it to matter anyway. I don't think the limit has been 0.16 in over 40 years, but that seems to be the magic number for accidents I've seen ("twice the legal limit").
I'd love to walk to a bar every once in a while, have a couple drinks, and walk home, but the nearest place is 2 miles away and the route is quite literally peppered with cops on the weekends, and it's getting difficult finding a different route these days.
-m