Too little quest and way too much grinding

Im not sure if its the lack of quest or the lack of xp given from quest but I find it very boring grinding 12 levels with no quest. The thing is that for everyone in Aqua road when they finish all side quest it usually makes them reach level 36. However, the main quest require you to be level 41 so we grind for another hour and the dungeons dont help. If you go to the level 20 dungeon you get like 12 xp per monster and after you complete the dungeon you dont see any xp difference in the bar. Even after reaching level 41they will ask you to fight pianus and its recommend level is 48. So then we grind for another hour. The reason why alot ofpeople quit is that the bosses are usually 15 level higher and each quest give so little xp that you dont even see the bar change it also doesnt make sense how they recommend you to fight pianus at level 48. The highest monster level is 43. So do we grind for 3 hours. And as I told you the dungeons or my lung dojo dont help.

Spammershshdh about Pocket MapleStory, v1.3.1