I started this after I watched the first 2 leaked episodes of Legend of Korra, and cried, and stuff. Only just now finished it, not that I'm totally happy with it. My revisions kept killing the quality, so sorry that it's kind of messy.
It's just, you want to picture them as young and happy and powerful forever, you know? I want to remember them like this forever, and it's difficult to watch Legend of Korra and think that they all got old and went their separate ways and died.
So I'm still going to watch it when I can, but I prefer to remember the Gaang like this.
Katara is still alive, and we see her twice (I think, if not more times) and Zuko is reportedly 87 and going around the world on diplomatic missions, but that hasn't been mentioned in the episodes. The information was released on nick.com. Sokka is confirmed as dead, and so is Aang but we still don't know about Toph, Suki, Mai, etc. There's always hope, I guess!