I was 11 right as the 90's started, and 21 as they ended. I am 31, now.
Honestly, not a lot seems to have changed. The music has only evolved, but not into anything that new (revolutiuonary) Hell. Most of the bands from the late 2000's seem like dirtect extentions--Seether, White Stripes, rap, boy and girl bands. Gaming is simply evolving, with no real new ideas (graphics are better, on-line is faster, but all the shooters are still Goldeneye, and all the on-line RPG's are still just better versions of Everquest), but it's all the same. The movies are now made from ideas that seemed to have been lit back in the 90's (geek). Technology is obsolete within months, ever-changing, but not really different... just more compact and easier to carry.
As it is, it seems like a lot of ideas that were "wished for then" are "happening now." But look at technology, again... a lot of these 30 year olds grew up then, and are now able to re-make it.
We're experienceing cultural-cycles a lot faster, now, and thus, I feel that a lot of things wll be pretty much "the same" for a long time.
The only real difference between the 90's and now is the economy and world theater. Things were a lot more stable, then. Everything else I wanted to do, could have been done, in the right income bracket. Not so much, i nthe 80's. That's what really seperated the 90's from what came before.
Well--that and social media. You can now talk to everyone, but be known by very few--back then, you could know people, but not talk to everyone.
Hell... other than 9-11 happening, the 90's seemed to love well into 2004, if not later.