The people who whine about being poor are stuffed with so much greed. (Generally speaking.)
They are always yearning, wanting, craving for the best, for the largest, for the greatest, for the most luxurious and for more. "...all you people want is more morE moRE mORE MORE!" as Chris Crocker would have said, but with much inelegance.
So here's the thing, read my lips when I say 'life is unfair'.
Surprise surprise. NOT.
If God wanted to make the world fair, He would have. But He didn't.
So, there'll always be some richer than us, some poorer than us.
And we are left to wonder for what reason He made the world as such.
Nonetheless, we, the human civilization, have no say in the works of God.
Hence, we can only continue living the way we do in this unjust world, whether we like it or not.