I think GW attracted different RPG players than the MoMos do. It just comes down to what you're looking for from your gaming. I never even did the PVP part of the game! There are definitely two sides to the GW series. I think it's its own style of online RPG and there's nothing wrong with that in the slightest.
I'm not really much into the level-grind-loot phenomenon myself but I enjoyed just seeing all of the world and completing the storyline. I put probably 100 hours into it, unlocking a ton of stuff and trying a few builds. I liked to look of the game and the atmosphere too.