Regardless of the hours it is worth the initial experience of just hitting 50 the first time and running the dungeons. It has plenty of fun little mini games, side quests, towers, but most of them are either built to an extreme, they are one time things, or designed to run everyday in perpetuity for the rest of the games life, only for you to gamble your daily paycheck in the slot machine on multiple characters. Anyone who pauses or takes a break is better off quitting once you break that cycle because you will remain forever behind unless you dump cash in to catch up.
So while 
			
 
		 Voldeth
 advice does sound logical one you get on the wagon why would you ever get back on?