Ashton is totally right. even if you had more money than you could reasonably waste in your lifetime, you dont value it in the same way as if you had worked for it.
this isnt just true for money, but anything that you get without having to work for.
I think its safe to say that most people on this board either have had teenagers, or can remember being one. Or, in Mac's case, Grand-Teenagers
Just think of how they treat that first car their parents buy them, compared to the second one that they have to pay for themselves. Think of how they act in college if they are working a part time job and fishing for their own grants and scolarships and loans, vs how they act if mommy and daddy are footing the bill for them.
Sure, theres exceptions. You might treasure a gift someone gives you more than you would something you got for yourself, due to sentimental value. but in general, freebies dont get the same reverance that is due something that you had to bleed for.
and if you think about it; things like rights, ideas, and values work the same way.