Well I'm 20, but even at 16, I always knew the value of money - that's just me though.
I don't drink, smoke or do drugs, neither am I one to go slash out all my money, even though I'm an only child.
I have money that I have actually earned (due to being on placement) to buy myself the best PC, the best headphones, earphones etc
But I'm still on windows XP, put it that way
YES. I watch my friends drink and smoke and ask them: "So what do you get out of that?" As for knowing the value of money, my parents have drilled it into me ever since I became a teenager.