This is one of those few games where "the grind" is actually part of why I enjoy it.
I feel less like I'm grinding and more like I'm enjoying a long walk in the woods.
Yeh thats it I just find it fun (they kept and improved on that feel yay). I find the exploration zones fun too (with respawn).
Also after LV20 you get an N-Ex Cube per level (which as far as I know dont have a use yet but will later).