Well, if you've never wanted for anything, how are you supposed to motivate yourself to work? Blame the parents.
I agree with Steve, its a problems isnt it?
I am not making excuses, but it must be damn hard for a kid who has grown up with everything to have the drive to do the work that many of us enjoyed and actually counted ourselves luck for. When I got a job driving tractors for the first time it wasnt even a job (for the first few weekends anyway), it was something I looked forward to. Even the odd weekend worming and dipping sheep was exciting (though not so much now!). A day in mucking out with the neighbours for a few quid - that was awesome cos they made cake and sandwiches for tea.
Plus having no money drives you on to work - if your given the money or know thats its a punishment that you cant have it, you just going to be contemptuous of the person not giving it too you rather than getting the impotous to go out and get it yourself.
Kids have it quite hard these days, many are perfectly balanced and are lucky enough to find a passion and an energy to get on, work hard, be nice - but some are, well yes, pretty lazy.

Baz