Some sort of means of distributing the wealth available from productivity gains is necessary, whatever you want to call it. In the end, there is nothing a human does which can not be replaced by a machine. It is not right that an increasingly automated system of production should serve a handful of owners while the remaining population starves. That is especially true, given that those owners have contributed virtually none of the real work that has brought us the benefits of modern civilization. (That we owe to the hard work of many people over thousands of years...)
1) Wealth shift is a distraction; the fundamental point is that it needs to be created rather than merely concentrated for the benefit of a few. To create wealth requires energy, and the developing world recognizes this simple fact. Most of that is coming from a sharp increase of coal plants today, but they are aggressively pursuing nuclear and will reap the benefits that we are forfeiting. While the west lets its energy, manufacturing, and other infrastructure decay, the real mechanisms for new wealth creation are growing over seas while ours recede. Sooner or later we are going to discover that exporting our monopoly on ideas is not a substitute.
2) We are nowhere near overpopulated, and the universe is a big place should it ever become an issue. Regardless, the best way to curb population is to lift them out of poverty. You have this backwards; people that can afford to relax and enjoy a bit of life, will not be busy popping out kids to help with chopping down trees for fires, fetching water, farming, washing clothes by hand, etc. When people are no longer burdened by such tasks, they also have time for education and innovation. Sure, some will watch TV, but even that is better than investment banking; those are the people really digging the hole for us all.