What I find boring is getting a class from 1-15. It's almost painful. Luckily, I only have two more classes I have to do the 1-15 grind with. Once you get to 15 all you gotta do is spam dungeons and you'll level quickly. Much quicker than your first 50. You get bonus exp from having a level 50. You already have all the leveling dungeons unlocked. Also you don't have the main story quests to wad through anymore.