I possess played many mmorpgs, you start with Dark Age of kinah aion Camelot, swg, WoW, Warhammer and Aion currently. From this experience, leveling in any mmorpgs follows the same pattern. The initial few levels are fun, as you take up a new class, and the game is new and fresh. Hence the low levels whiz by, so you do not pay much care about the experience bar.
At the start to mid levels it all changes somewhere. Typically the leveling seems more of a laborious task, the quests longer seem to take, and even knowing the very best next for quests are of a mystery. The experience is watched by you bar more closely, looking for which mobs give the top experience without risking loss of life.
This pattern was being repeated by me in Aion, and getting to levels vipaionkinah 50, where most of this guild mates were, must have been a daunting task. Having a job, and family also meant that I could not waste any right time in the game, as I often was not online that. I decided for you to something about it this.