For me I still love the melee combat gameplay, the teamwork to try to win rounds, and the single life gameplay. If you play to grind levels and get gold for new equipment that will burn you out or spoil the game eventually. Not saying anything bad about the levelling system..the persistence, marketplace, value in gear is a good part of the mod, but people should treat it as secondary to the actual gameplay.
If you do anything too much you will get burned out and bored tho, even if you still kind of like it. Just take a break before you're really sick of it, then you might miss it and come back. Or you break your addiction and never return.
The gameplay is just not something you can get elsewhere (except other M&B mods maybe). There is some crappy elements to the game, mostly a limitation in the design for ranged mechanics and the shear tactical advantage ranged brings. But its still a fun game.