I will admit that I was spoiled. I was, by no means, brought up with a silver spoon firmly positioned in my mouth, but my parents did the best they could to give me everything I ever wanted, even if I didn't always need it.
With that said, I work in a high school and see students everyday who are more spoiled than any people I have met in my life. I know that sounds harsh, but it's true.
Case in point..
A former student of mine got a brand new Porshe Boxster when he turned 16. He wrecked it 3 days after his birthday. His dad bought him a new one the day after that. He wrecked the second Porshe within the week, yet his dad bought him a third one shortly thereafter. He also got a new Porshe for graduation.
I think a lot of the "spoiled" children phenomenon goes back to one of two problems:
1 - absentee parents wanting to buy their child's affection
2 - parents wanting to be their child's friend and not the parent
Just my .02 worth