Because there's very limited food choices if you don't have a lot of money. I agree, someone with this condition should not drive, but that doesn't mean life is livable in USA without a car. In many places, there is no public transport. This would essentially be a sentence of poverty.

That said, I can afford to have this condition, I do take Uber when drunk, there's reasonable public transit where I live. I'm not trying to excuse drunk driving (I say this as a DUI guy twenty years ago). I'm saying that what you just said wouldn't make sense to some people because of restrictions they can't control. It's too bad our society doesn't care more about people to solve some / all of these problems.