The game is fun for a bit, although it frustrated/lacked interest for me to the point of returning back to FFXI. Another reason that held me back to FFXI though is I felt I had a lot of incomplete goals and I wanted to finish some more of these goals. I think I may wait until lvl 99 cap is out in FFXI and until I hit that and some of the extra stuff.
I may just wait it out until PS3 release in March mind you because I'm more of a console player and I often lose interest playing games on a PC anyways. By the time March PS3 release comes, FFXIV will probably have it's very expansion and the game will be much more established by then. I may consider logging in every now and then though and do some leves or check out any of the newest updates so I'm not too much in the loops. If I can link my FFXI and FFXIV account (Which I think I can only do after FFXIV trial is over) then I'll end up paying about $15 per month which is only a few dollars more than what FFXI costs alone.
My mind changes all the time though, even in FFXI I usually want to do one thing then change my mind and do another thing. Sometimes I can stay focused to finish with one thing though if it's something I really want The same may hold true for me playing FFXI more than FFXIV, I might change my mind and decide I want to play full time in FFXIV.