I think there is a problem with the average J.Q. Public and turning a faucet knob.  I don't believe many people care or even think about where this resource comes from, or even bother teaching their kids that it's not a given.  Faucets and showers and toilets and laundry and cars and lawns and dishes and . . . and it's all just freely running without regard to how we source it or when it will run out.  Human kind is going to run itself out of a home.  I guess you just can't help the hapless.