I'd go ahead and pick it up again if I were you, since I was in your position a few months back. I experimented with a good many classes to see which one suited me and got the better half of them up to ~25 (with the exception of one 80 shaman that was actually a transfer from an old friend). Then, I got bored of the zones (if I have to see Ghostlands/Barrens one more time) and started roaming around for RP that didn't quite come (it's hard to come by sometimes, even on RP servers). But the first of August, this all changed. I decided to give it one last parting shot as I went to cancel the account, and hit 30 with my hunter. A couple weeks later, I discovered the joy of Arathi Basin and the new patch's PvP experience addon. In a nutshell, you can level doing something that isn't the same old thing. Er, well, it is the same thing, but it's not the same as 'run here, kill things, run back, get gold'. PvP is an ever-changing environment with different minds using different strategies each time.
So if you can learn to ignore twink ranting and have a taste for RP, then go ahead and try it out again. Hell, try it out anyway. It may redeem its shine for you. And if it doesn't, you can always go off and try something else. As for me, I've been gaining a level a day now. I just can't wait until I hit 51 so I can kick ass in AV. *sigh* The Basin'll have to do for now.