Quote Originally Posted by MixedVariety View Post
Yes, I agree...but with this corollary: An inordinate amount of grind can lead to a game becoming boring more quickly.
Grind is usually added to give you the illusion that the game is fun.

As for GW2, I can easily see myself getting lost in dynamic events and WvW and stories to the point of not realizing that I gained too many levels already. Especially the trait challenges.