Well, what's the first thing people think of when they hear the name Square (pretty much of the games before XI)? What do people like the most about them? Why did they keep coming back?
Was it because of the spectacular UI that the previous games had? Was it the graphics? From what I've heard, most people kept coming back because of a great storyline. But everyone today is only complaining about the technical aspects and not the aesthetics. So far, this game has more storyline (even BEFORE the release) than 95% of other RPGs out there, MMO or not.
If you can sit through the CURRENT problems (as in, they may be fixed later), you might find something that you actually used to LOVE about Square. And I'm not talking about the levequests. Those don't expand on the story (to a point). It's after you start leveling up that you see more and more of an amazing background of Eorzea and what role you play. Unfortunately, nobody has the patience to sit through that far, and just like people think Square only cares about graphics, YOU only care about controls/UI.
In more than a couple RPGs, you have to sit through the bad to get to the good. Just remember that, unlike linear RPGs, MMOs can be repaired in-game. Try to remember what you loved about Square and don't judge them by what you hate about it this second. I'm know you'll find something....easpecially if you can reach level 20 ^^