Unless you collect achievements, mounts or something else, the game is going to be something that you finish in a day after patches. If you have ever watched people's behaviour on Steam before, they play the latest game or DLC for a few days and then move on to the next game and SE is just developing it the way people play.

The other way people stick around after patches is to do social content like roleplaying or FC events.

The game doesn't really have an action battle system like FF16 or something, so if the battle system gets boring then that's just how it's going to be.