I doubt that the Sims 2 Community is going to dissapear. There are so many different communities and sites for everything to go to loss
I myself plan on buying the game but I don't believe it'll win me over and ill fall in love with it like I did with The Sims 2 lol
After a couple of hours of play I'll most likely shut it down and run The Sims 2
Especially with the horrid maxis skins and eyecolours it comes with