I felt this way in the past - both for XIV and pretty much every MMO I've played long enough that I started to lose interest in. Seems like it's time for a break if you feel unmotivated to play.

Nothing wrong with your gut telling you that you aren't having fun.

Since you know there is nothing new to do until 6.5 that you don't have access to today, you can check in again later and decide if it's worth your time.