Why are we striving for a perfect world? It makes no sense and it can't be achieved. Why can't it be achieved?
Its because of freedom. In a perfect world, everyone should be free, but how? People will always need rules, but humans can't always follow them. Furthermore, we can't be free in a perfect world, we would be captives of an illusion.
Imagine a perfect world. In order to keep things perfect, nothing should be changed. So everyone has to stay 'perfect', unchanged. That means there is no freedom to develop yourself. If you would you could destroy the perfect world.
So if there is no freedom, is that world so perfect? I think a perfect world is an illusion, produced by mankind's desire for more, our malcontent.
So what about total freedom?
Impossible, mankind needs rules to live by. If they dont have rules, they turn into mindless savages, since everything is permitted. The human race wants rules, thats why they started to develop religions and laws. Nowadays ethics play a huge role in our civilizations, but ethics are but mental restraints. These are the reasons of total freedom's impossibility.