It's pretty terrible now, plagued by Tanaka's ideas and drop rates as bad as Darklight and Militia Trousers. Maybe since Matsui picked the game back up, it'll be less shit, but I'd wait for the new expansion before bothering with anything.

I wouldn't say it's too late to get into, since someone can PL you 90 in a few days or so, and then you can solo the missions. Endgame is very lacking, since they decided to increase the level cap from 75-99 in roughly one year with little content to support that jump. But you can explore a lot of the locations in XI, since that's what made the game so great.

Obligatory THIS IS THE FFXIV FORUMS NOT FFXI FORUMS post.