GA26, you're retarded. It really is that simple. I take offense to your implication that people who say they can drink responsibly might one day not drink responsibly.
How is it foolish to know ones limits? Seriously, answer that question. If I know that as long as I'm not sick, I can drink 1 or 2 beers per hour (that's not very much either) and be totally fine, what's the problem with that? What, am I going to lose count of how many I've had while the empty's are stacked on the counter? Am I not going to notice that I'm getting a little drunk if I have 3 or more in one hour or even over 2 hours? Do I not have the capability to stop? To simply say "No thanks" when the waitress comes by to ask if I'd like another? Or to just not grab another one out of the fridge at home? Even when I was getting plastered on the weekends, which was over 10 years ago mind you, I knew I was getting plastered and wasn't stupid enough to go anywhere (yes, we always put the car keys away and never went out for more liquor). If/when I have a bad cold, I simply don't drink. And yes, it really is that easy to decide "hey, I can't drink tonight because I have a bad cold and I don't want to make it worse".
Maybe in your world people can't think for themselves. Maybe in your world people have such low self-esteem that any kind of offer or "pressure" makes them cave. In my world, people don't have to drink if they don't want to. And if they do want to, they can be stopped from going overboard (yes, I have taken keys away from people before) or they know when they've had enough.