Private property, performance based rewards, freedom to be different, these are all essential to a prosperous society. Any post-agricultural civilization of small size needs them.
It is sad that so many smart people fall for the song of socialism or communism. Many of them make the mistake of assuming that people are self motivated like they are. Soviet doctrine strived to produce the "new" man, better then before. The problem is, you can program human beings all you want, using coercion, threats, etc., but you are simply going to have to re-coerce the next generation.
One of Marx's biggest errors in my opinion was the unrealistic assumption that the state would pass away. In all of the countries that have attempted to create a communist society, the state has yet to pass away and the utopia has not arrived. The "State" is a self sustaining creature, it will not pass away, no matter what Marx has to say about it.
Think Free, Live Free