I know the way I am. I've been around the MMO block for about 13 years now. In WoW (quick, easy example) I can't possibly rip through the content in said amount of time due to the strenuous grinds (rep, gear etc) and daily/weekly limits on completion. Sure, it's an obvious, shameless way to stretch longevity, but damned if it doesn't work. It keeps people logging in over and over again longer than any other game-type out there.
GW2 is an amazing game and anyone on this thread will tell you I've been around and supporting it for going on a year now, however given the type of player I am, I'd burn out quickly. You wanna walk around fake worlds and smell the cyber roses? Awesome, seriously more power to you. I love that people like that kind of stuff. I, on the other hand, do not so I play differently.
I like having gaugeable goals with controllable, statistical progression. Long, long grinds with clear-cut rewards at the end. I don't beat around the bush about the kind of player I am and neither should anyone else. GW2 is amazing, but it's not the next messiah and it's certainly not tailored to my playstyle.
Now that we've cleared that up, we can also be clear that while I'll buy and play it, it will in no way, shape or form be my soul source of MMO entertainment. To each their own, yes?