It would take a RL situation that forces me to cut back on expenses. Even then, this would have to be pretty significant because the monthly sub fee is a very minor expense in comparison to other things that cost more that I am willing to cut out.

When I quit FFXI, I knew I was done. I unsubbed and resubbed several times, but eventually arrived at the conclusion that my time in Vanadiel was over. There wasn't anything I felt like doing, all my friends had left, and I had no attachment to my character. The last two are the quintessential tell tale signs that it's over. Right now, the very thought of leaving FFXIV behind is heartbreaking, so no chance of unsubbing anytime soon.