chances are they are far more goofy to far more people than either of the Hilton's.
No one is perfect so it's easy to take stabs at the famous...the fact is they are famous though, it's not just their money that gets them the recognition...they get into some places where no matter how rich you are, you better be cool too.
I bet they'd be a blast for me to hang out with, and I am sure we'd get a lot of 'how old are you?', 'why don't you grow up!', etc... then again I was clubbing until I met my wife a year or so ago and I am 32 now.
Survey says Jealousy, #1 answer.