The idea that wealth leads to destruction of the soul was implanted in the mindset of the lower classes by a controlling power structure intending to keep things as they were. What social revolution or change can be effected by a people who believe themselves in knowing their place? Nothing.

Blessed be the meek. Blessed be the poor.

The meek and poor keep singing these old songs dreaming of the hereafter while in the now those who implanted those ideas reap the benifits.

BTW is your purpose to find your own meaning within islam or to convert others to your faith? The first is an actual finding of your meaning and has depth... the second is more like using other people to affirm your own beliefs which is kinda weak.