I'll offer my 2 cents here.
I've been playing for nearly a year. For the last 7 weeks, I have not felt motivated to log in to the game, other than to do my daily expert Dungeon Roulette, and for raid nights.
I have decided to resign from my static earlier this week.
Note - they are not bad people. In fact, they're a really casual bunch, and I really enjoyed playing with them. The reason I am quitting is because...I no longer find the game fun.
At the moment, I am kind of just drifting around. I have been spending time working on my Steam backlog these days outside of daily raid hours, and recently, another group of friends have invited me to play Payday 2 (great game by the way) with them.
It's come to a point where I find nothing in FF fun anymore. I haven't tried any of the new content, but right now I'm tired of doing gauntlet runs (ie. learning how to Ramuh EX). If that is the case, may I suggest you do what I plan to do, and take a break from the game. What I probably need is some 8 - 12 weeks break, I might find it fun again then.
But until then, here is where my love relationship with FFXIV ends (for now, perhaps). I still have 2.5 months of subscription left, and I might just log in casually, maybe just to say hi to some people.