It's all about unbridled envy, I suspect. The have-nots are perpetually envious of the haves and out of frustration they seek government as the means with which to take from those that have.
Rather than taking one of the only two realistic courses of action... be happy and appreciative of what they do have and working to maintain it.. or work harder to "move up the ladder"... they turn to government.
Using the analogy of the school playground (a very apt analogy, to be sure), it goes like this: Jimmy doesn't have as many toys as Johnny, so rather than finding more toys or exchanging the toys he does have for the toys he wants he runs to the teacher/chaperone and whines that Johnny isn't sharing (re: giving) his toys away.
I'm far from wealthy; I make around $50k per year... but I don't really care that I don't have every material possession or a particularly high social status. I can feed and clothe myself, keep a roof over my head, drive a car I like, take care of my friends and family, put some money away for retirement, and have a decent amount of fun. What more is there? A lot, to be sure, but I don't lose any sleep over not having those things. The bigger the crown, the heavier the burden.