It's not any worse then other online RPGs...All these Korean games are like this. I remember Rose and Kal taking a long time to level, think it took me longer in those then in FlyFF.
If you are just starting out from scratch the first few levels are a little tough, it gets easier around levels 25-30, your stats are starting to help, better equips, better skills, selling a few dice to make money, have the goal of hitting 60 in your mind. After 60 it's get alittle interesting again, then after about level 70 is when it really starts to just get boring. Don't know how the people levels 104 and higher can keep leveling on those level 104 monsters -.- Hope the next update with the pets brings more to this game.