If you're a dumbass who likes to go broke spending your money on worthless bullshit, go ahead. Just don't whine to me about it afterwards (which is really annoying; nothing drives me more nuts than people who make more money than me and have no kids complaining about never having any money).
However if this starts some sort of trend where paying for tap water is widely accepted enough that I can no longer get free water at a restaurant, okay, NOW I'm going to get pissed off. And that's sadly often how things go. We talk about voting with your wallet but voting only works if you're in the majority.