I played FFXI about 2-4 times a week for a few hours at a time. Sometimes I was able to accomplish things and other times I had to scratch my head and ask how I wasted that much time doing just about nothing at all.
I'm one of the PS3 hopefuls. I haven't touched FFXIV at all, and won't until it's on PS3. I'm not (that) naive either. I know that people who have more time to play are going to get more things done. I also have a full time job, go to college, have a beautiful wife and four kids. I'm not going to be able to devote as much time as I'd like to the game. But I'll still be able to play about the same as I did for FFXI.
I'm going to have RL friends playing and hopefully meet people in game doing the same things as I am. Are they going to be so far out of sight after a month that I'm alone?
I guess my real question is. How much time have you devoted to the game in order to get what you wanted done?