Semi-related: I don't understand people who drink to the point of not remembering anything. I see why you want to get drunk, but why enough to have amnesia? So you will forget the possible fun you had? I don't get that.
All I know is that it's a "feel-good" moment for the time, and you'll just wake up feeling terrible, and your wallet empty.
Does that sound like fun to you? Not me.
In all fairness, a fifth of good potato vodka is only 15 or 16 dollars, and depending on the person, someone could get hammered beyond compare on 1/3 - 2/3 of the bottle, so not that expensive. If a person keeps their mind about them and is wary of their limits, they won't get very hungover, or at all.
Bar drinking however, is the fastest way to burn through money.