What MMO isn't mostly grinding?
I mean wow is just grinding to level 80-85 as fast as possible, followed by grinding gear drops in high level raids as fast as possible.
Theres lots of sights to see on the way, and other stuff to do. Like fishing. Fishing rules.
You wanna talk grinding, go play Ultima Online. You'll be numb to grinding after playing that game. It hurts so good. I wish the expansion last year didn't f*ck the game up beyond repair.