Forcibly redistributing income from low resource generators to high resource generators creates an incentive for people with fewer resources to have more children than they are capable of supporting. This dynamic will in the long run lead to more people that produce fewer resources. Currently government is redistributing income upward by economic prohibitions (regulatory barriers): http://cepr.net/publications/report…
The fundamental issue addressed by positive incomes is simply that money serves two processes in economies that are at complete odds with each other, 1) a store of value and 2) the fluid that drives economic activity. The more money that is held in the fewer hands, the less well it is able to fulfil the second and far more important purpose. In the limit, all the money is held by very few people, and shortly after that, those people find themselves at the hands of a very angry mob.
Which just never ends well.