I've been playing since the Beta came out and I still enjoy myself
I do have to say that I've been gone for a couple of months due to RL things, so I didn't really get into the whole poetics phase
Sometimes I do feel like the game gets grindy, but when I feel that way, I just go off to gather or craft a bit, maybe hang out with friends
For me it also helps that my FC does a lot of stuff. We're not totally into going for Seph ex or anything, but we do slowly try to catch up with savage content. From time to time we even do some "old" content, like coil or ex primals, just for the fun of it or to farm some gear / songs / aetherstones, or to get a clear for someone who hasn't done it yet
