You know the new games are basically going to be Emerald on steroids, right?
Anyway, I'll admit, I haven't played it as much lately, but the thing about Pokemon is that it's infinitely replayable. You can go through any of the games over and over and never do it the same way twice. I still play Yellow Version from time to time, I still play Silver, Emerald, Platinum, White, Black 2, and Y. There's no end to Pokemon's entertainment value.
It's entertainment value entirely depends on your brain chemistry. ;o
I understand the idea that you can replay it over and over differently, but I think I was tired of the entire design and concept of the Pokemon games.