Stratos stole my thunder... again!
I feel similarly, except I've been like this for a few weeks now. I've completed every quest and I don't feel like there's much more to do in the game. Sure, there's still plenty of weapons and armours to create, but with nothing new to fight, it doesn't seem worth it.
I'll still join sometimes when people are playing, though. If people still get together on Tuesday, I'll definitely play then. Beyond that, it'll be a matter of what I'm feeling at the time.
I'm already so far behind everyone else (still HR 43, I think), I wonder if it will just be a even more of a tedious grind.
Like Maxi said, it doesn't matter. You're close to the point where HR rank no longer serves any purpose; you're on the lvl 5 quests and there's only one more to go after that. There are still plenty of reasons for us to play those quests; in fact, depending on which armour and weapons we're trying to make, there are reasons to play every quest lvls 4-6. As I was talking about above, the only reason I will play this game is to do so with the people here, so any time that you come back, I'd be glad to join you.