I played WoW for three years and I've come to the same conclusion. Leveling is plain boring until 70. Once you cap, there's plenty to do for a while, but it soon becomes a grind. There's only so many times you can do the same ol' thing before you're burned out.

I'm really glad my friends talked me into trying something else. First was AoC. It was buggy and broken, but some of the ideas they implemented were really good. It has a lot of potential if they can ever work out its many issues.

Warhammer was really the death knell for WoW with me. It's unbelievable the sheer amount of things to do that are available. You really become immersed in the game. In my opinion, any WoW player who tries Warhammer won't go back.