Because it's the only efficient way to level.
I didn't rush and look I'm still 46 after over a month in this game, and I barely touched FATE's on my WHM.
They need to buff EXP in dungeons by a long shot. As a DPS, we already know we have to wait FOREVER to enter a dungeon. Parties are = FATE parties. Okay that's fun.
Also what content?
There is no content after your first 50.
We're just re-running the same crap but FATE wise back and forth.
I do other methods before running FATE's. I honestly don't want to take 5 months to level in different ways without FATE so I won't really level anything else till they fixed it. I just wish dungeon EXP was a lot more better.
Do not pin me as a rusher because I am not, but the game was pretty much said by Yoshi, "The game begins at 50."
There is nothing worth going back doing and he skipped everything else early PvE and Sub-class crap to focus on this mundane End-game people have here.
The game has been out over a month, and + some days if we were here Phase 4 and EA. Rushing isn't viable reason to say this anymore.
There is a lack of content, and that's just it.