maple story is just like any other mmorpg in that sense, you press keys to attack monsters to get exp points to level up to get character skills...
you must be also saying every game sucks then.
counter strike, you click to fire at people and try to shoot them to death and get kill points...
dota, same thing i would think (haven't tried it)
fable 2 same thing, attack monsters to develop your game's character.
final fantasy games, kill monsters blah blah blah.
=S
you can't say maple story sucks unless you don't play any games...
ps. its not the same sprites...you can fight from mushrooms, to demons (the balrogs), to dragons, to even gigantic statues (zakum)