I liked it (saving and later also investing), I think at one point I even bugged my bank for better rates on my tiny account once I'd figured out how to compute compound interest on my dad's calculator (and realized it was programmable).

Not that I don't need a job anymore, but it did serve me well (the stock market rising continuously for 10 years might have helped too). I definitely wouldn't talk anyone out of it with that sort of reasoning, maybe the only benefit is sparking an interest in math and computers.