Centralization of power has so far made every society deeply flawed or even hellish. The three societies you mentioned are the only ones where power was purposefully decentralized, and that seems to be the most promising path forward that was never allowed to stretch its legs.
I don't think so. Pretty much all the negative things about Bolsheviks were already prominently there by 1919. Anti-democracy, mass terror, torture, concentration camps, you name it.
You get my point, though. It's one thing to propose an idyllic society. It's another thing to try to implement it. In all cases where there's been a serious attempt at implementation on any scale above local and short-lived, we view the results with horror.
Please don't give some tripe about medecine or something...sure we have some fancy new techniques and the like, but that doesn't matter if those systems aren't generally available or rejected on pseudo-religious grounds.
It might be true we have been living longer for a while, but that's a trend of the past 50 years in some areas, not some inexorable progress towards longer lives...
Maybe we have lots of food and entertainment. I suppose that is good, in theory. But again, not something of recent history, that has more to do with the availability of large shipping vessels and TV production...
The part people may find optimistic is continuing to improve in any appreciable manner, versus some gains made decades ago...
You can have personal improvement, and you can continue to reap the benefits of existing systems, this is not the same as general progress or, progress made by society, much less any sort of indication that progress will continue...
This points to what I think is the missing amendment to the US constitution, when a media company gets big enough to influence significant portions of the electorate it should not be allowed to be owned by a single billionaire or a small family. Large media ownership should be distributed as widely as possible across society so that one rich guy isn't able to force his opinions on everyone.
For a few brief years, it looked like we were there.[1]
[1] https://en.wikipedia.org/wiki/The_End_of_History_and_the_Las...
There are so many ideas that sound good on paper but are bad in practice, and that happen to be convenient for the goals of unscrupulous powerful people.
The notion that society as a whole will at some point stop falling for such ideas seems very optimistic to me.