It is difficult to be in an opulent position: opulence leads to false pride. Pride creates danger for us. Therefore, sometimes devotees find themselves impoverished because it enables them to remain humble and to become dependent upon Krishna. When we are surrounded by opulence, we think we have power, control, so what need do we have to depend on God? We think ourselves self-sufficient. Then we think we do not want to see anyone superior to ourselves. This mentality is, of course, one of the characteristics of demons.
(SB 4.30.12-13)