I've recently returned after a long break and have been enjoying my time so far. Ffxi was my first mmo in which I played for over 10 years. With FFXIV baring enough similarities to be considered a spiritual successor it feels like home, which helps me want to stay. I consider myself a casual player and take things slow which helps me not get tired of the game. Even when I do get tired I always find myself coming back and checking up on all the new content.

I think how a person spends their time in a game helps them to stay. If they have good experiences and memories it's easier to find a reason to stay over someone who doesn't and is frustrated with the content or lack thereof.