The leveling and questing is (or used to be) fun. Now you just blast through the yellow quests and get to max level in 2 days or something.
BnS end game is actually not that awesome, if you really look at it: Grind for materials, or purchase them with cash, upgrade your weapon and accessories, do the same handful of dungeons every day to get some gold, maybe do some arena or bg if you're into PVP.
I'd highly recommend you take your time with leveling up and enjoy everything that's left on the way, or maybe quit right here and look for something else.