I keep playing, and restarting some games, just because I want to use different or uncommon Pokemon. For example, a few weeks ago, I restarted LG just to use Pokemon like Jigglypuff and Drowzee (I restarted to remember the storyline as well though). I also like battling, that's never gotten old for me even though it's the same in every game. With "unique" Pokemon, as I call them, it makes it even more fun imo.