If I’m going to even have one glass of wine away from home, I’m going to have someone else drive-I’m a lightweight in the alcohol tolerance department, and that is the responsible adult thing to do-I would hope anyone who is going to have a drink or even a few tokes does the same thing-if they don’t, and drive like an idiot then they should get busted, and no sympathy from anyone.
That is our policy too - my husband had a beer last night around 6 and we had to run an errand so I drove.