Do people from older generations think the 90s were the best? Do people from younger generations think 90s was great when told about it?
But at the same time, the '90s do seem rather exceptional as a time in between conflicts- the Cold War, which in some ways is an outgrowth of the end of WWII, itself an outgrowth of WWI, was over. The anxieties of living in a post-bipolar world, of dealing with dangerous non-state actors or multipolar rivals to the American order, had not formalized yet. If anything, most of the world seemed to be getting along under the capitalist liberal democratic framework that Fukuyama called the End of History. So from a security standpoint it certainly seemed peaceful.
I personally have a time travel rule that I wouldn't want to live before penicillin, vaccines, and novocaine. That really doesn't leave much of human history. But the 90's in the US and Western Europe were nice.
Only upended because people fell for the whole "terrorism" con.
(also we were ignoring the former Yugoslavia, as well as the entire FSU in general — but IMNSHO "terrorism" was an unforced error.)
https://www.theonion.com/10-things-that-will-make-you-super-...
But it's not entirely surprising why the '90s are remembered so fondly by many people living in certain parts of the world, under certain material conditions. It was the end of the Cold War, it was heralded as the End of History. It was the coming of an entirely new millennium and the Information Age. The U.S. federal government had a surplus. Americans were worried about silly things like killer asteroids and Y2K apocalypses.
It really was a time of boundless optimism and futurism in America, and both the 2000s and the 2010s completely upended that.