Ok a couple of thoughts...
1. You're fucking jealous. It's a totally normal human emotion, so don't feel too bad about it. Just realize that it's not going to do you any good. How about you spend the same amount of time analyzing what their parents did to make their money.
2. Just because they have money doesn't mean they have a happy, fulfilled life. Sure they might be spoiled etc, but that's only their parents way of making up for neglecting them for years. There's no time to play Polly Princess with your daughter when you're obsessed with working your ass off to earn millions of dollars. That hot little spoiled 17yr old slut with 5 shopping bags and a purse full of coke is only acting out and getting gangbanged by five guys in Italy because she hates daddy. It's a cliche because it's true.
3. "I'm helpless, like a rich man's child" - Bob Dylan
These people can never take care of themselves. You think they are going to run the family business after dad is dead? Hah! Most millionaires in America are self-made. Hopefully he left enough money to take care of them, because they are going to be fucking worthless to society. I have to wonder about how many spoiled rich kids that have a terrible life now after their parents lost a shitload in the economy crash. Personally I'd rather work for my shit, because then I'll appreciate it more.
(Yeah I know there are awesome, productive rich kids out there. I know a few. But I also know a lot more of the above. Hopefully this makes OP feel better

)