Grind, work, effort, name it however you want. Goals are in part defined by what you to do to reach them. Doing a dungeon requires killing monsters inside. The longer the dungeon with more monsters, the more boring it becomes. If clearing the duneong required nothing then it wouldn't be a goal. Sometimes grind is fun, as in there are some monsters in the dungeon, but not enought for you to become weary. But then you won't call it grind, you will call it fun, right? Well, it's still work / effort you have to put into it.
So, each goal requires work / effort, which in fact is still a grind.