Political views

Also, if society would not scale the different jobs, e.g. one job is better than another, each could find its place in society without wanting to become "something more". A doctor is important, because he can cure disease, but the garbage guy is also important because he prevent diseases by removing the garbage from the streets. However, one will always be perceived as more important for society.

People will always measure themselves by something external. If not salary than desirability, enjoyment, power, sex. If you restrict and disperse resources in an attempt to manufacture contentment, then you have to regulate everything else as well. And even if you could hypothetically do that people want their lives to be meaningful and have value, and standardizing everything across the board removes that possibility. What incentive is there to excel?

I think you hit the nail on the head when you said :

If people were to work for the society and not for a salary, I think things would stabilize themselves and a better side of the human would be shown.

The problem is that the side of humanity that wants to better himself is the same side that wants to better his community. They are pretty much one and the same. You can't rid yourself of one without ridding yourself of the other. That pride for your nation can't survive without personal pride as well.

These things are difficult to imagine, because we have been taught that the state, capitalism and money are mandatory for a society to work. If you look at the remaining aboriginal societies, they live peacefully in peace with nature and in decentralized societies. There will always be natural leaders that could guide people, but having a form of supreme authority is not mandatory I think.

If you know anyone from aboriginal societies, or have visited them yourself, you would know they wouldn't describe it that way, in the least. Human nature has been around a LOT longer than centralized government.

I will say again, in an ideal world with ideal people, this could be done. But people aren't ideal, and changing the government structure isn't going to produce ideal people to follow it.