I enjoy FFXIV quite a bit. However, as posters above have stated, it lacks polish. That said it is pretty exciting to see the game at this point and watch it evolve. It will be much more polished by March, when it is released on PS3 - if you are easily frustrated then you may want to wait till then - but if you are excited by the opportunity to be part of a new world where things are really open - I suggest joining now.
Again - WARNING - if you want a polished game with a lot of developer-defined goals - (quests etc) - you will be unhappy with FFXIV till at least the end of January.
However some neat new content is on it's way right now. I'm looking forward to be one of the first on my server to take down some of the NM's that are coming out.
When it comes to sitting around not doing anything for long periods of time, only being active for short windows, and marginal changes and sidegrades I'd say FFXI players were the perfect choice for politicians.