A thousand years? It will not take that long - max 1 to 5 generations, and we will have reverted to the barbarity of a few thousands of years AGO. Your ideas did not work when the entire population of this planet was less than a million. As long as there are people, there will be a pecking order and the strong will dominate over the weak...and there will be nobody to protect the weak.

All you can ever aim for is an approach to utopia, but we must never try to achieve it, for that will bring about the end of mankind.

Sorry, but on this subject, my experience has taght me to think a bit more cynically, just like @davebrewer.

Wasn't the French Revolution an attempt at creating something similar to your dream? It did not work - and neither will yours. As a matter of fact, it is the people who have idyllic but entirely impractical dreams that they try to impose on others that causes half the problems we have. Why do you think most people are afraid to be seen to be even slightly different from their neighbours?