As someone whose raid group has had 13 down for a number of weeks (if I am counting dread weaps we've had it down for 8 or 9 weeks), and who doesn't have a lot of motivation for the grind-fest stuff, this is what I am going to keep myself occupied with:
- Finishing WAR Zeta. I am on the Nexus > Zodiac step. I don't really have the time to be a grind-hard, but I think its an important experience in an MMO to do the "big weapon" quest.
- Trying my hand at crafting. This is going to include finding a decent way to make gil that is traditional. First step will be grinding out every job to 50. I'll do this while I wait in queue as MNK or SMN when I can't take tanking another CPMHM : D
- Triple Triad. I spent a lot of time in FFVIII playing TT, but that was because I knew I could get powerful rewards for having and turning in certain cards (really awesome items to convert to junction magic). In this game, there really isn't a real reward that affects how powerful you are, but it has been mildly entertaining for now. 24 cards so far I think just from messing around - just got Bahamut!
- Get the derp lizard from the Amal'jaa and the WAR bear. I think I'm getting relatively close! I don't really have any other special mounts except the golden magitek - I think I have 50 trials left on WAR to get the bear and about 1/2 the last rank on Amal'jaa beastmen.
- Increase my FCs/my own reputation on the server. I think its probably worth while to get a better name for myself and my associations - this game is so much easier when people owe you favors! : D. Being able to pull in 2 friends to help with a T9 clear for some newbies is a good feeling, and by calling in 2 favors you just gained 5 people's thanks. Not that I am bartering favors and manipulating people, but its a game about giving and taking from your friends to accomplish the things you want.
There is stuff to do, but to be honest if I played 12 hours+ per week I'd probably have nothing to do by now. I have no interest in fishing or botany or sight seeing or chocobo racing, and I probably will never touch those things unless they are changed in some way. Just because there is content available in a game you play doesn't mean you should be forced to complete it and enjoy it before you are allowed to say you are bored.
On the other side of the coin, just because you don't want to do it doesn't mean others don't as well. There is PLENTLY to do in this game - it would take a real genuine effort to have finished everything, so don't go spreading the rumor that this game is empty and boring. Maybe for you it is, for a lot of people there is a lot left to do!
P.S. full support behind FCoB being unlocked ASAP. Since they are going to completely trivialize it (most likely) with expansion, they should encourage people to get in, farm the stuff they want, and have fun in that playground before it becomes a ghost town. My suspicion is that it will be more abandoned than BCoB on Heavensward drop.
EDIT: They should unlock it on the same TIME-LINE (days, not patches) as BCoB and SCoB so as not to diminish the accomplishment of clearing it before unlock.