good it has lots of things you can do mhms i also have been playing it for TWO years o.o and i still have not finished my my old goals x.x or even started my new goals
Things you can do:
Farm... one week or less you get 200k
8 Different Generation Story Quests AND they are actually interesting, have good story, give good exp, prizes and offer a challenge (Each takes about 1 to 2 weeks to finish)
Free Rebirths at age 20, if you plan on NOT using any NX i recommend you make a HUMAN first at age 17. That way in 3 weeks you can rebirth. ALSO since your FIRST CHARACTER IS HUMAN you get TWO FREE Character Cards, one for Elf and one for Giant
If you do plan on Paying for Rebirths.. you pretty much can do it every week and add to your Total Level. You will have enough AP points to learn everything and anything you want. But what skills, weapon, armor you have does NOT matter in here

is all in the way you play the game and i really like that.
also if Nx is a problem to anyone...this game has the LOWEST NX to In game gold conversion...