Quite true. If I had black outs or hangovers, I would certainly be working on my habits. I enjoy my holiday, but I'm not about to make myself sick in the process. 😎 If others need to find mechanisms to limit themselves, more power to them! There are all kinds of folks in this world.
As my Danish Grandfather used to say, "It takes all kinds and by-yeepers we've got 'em!" (I don't believe that the Danish language includes what we would call the "J" sound).