Bought it day one, Platinum'ed it, sold it. Great game, but I just get so easily frustrated playing fighters online that by the time TTT2 came around, I realized that playing online and trying to be competitive just isn't worth the stress and frustration. And I'm sure someone is going to try to say "well, you've just got to stick with it and get better and not get frustrated when you lose" etc etc, but that's just not something I can do, as much as I hate to admit it. I've played and invested significant time into just about every fighter released this gen, and I've come to the conclusion that being competitive just isn't something I'm cut out for. And once you take the online stuff out of TTT2, there isn't a whole lot else to do. I love Ghost Mode, but even that gets boring after a while (having to reach Tekken Lord for the platinum trophy certainly didn't help there).
The biggest stumbling block for me, as far as "getting better" goes, is the ridiculous time investment required. I don't find winning online in fighters any more fun than playing a good single player game, so why should I invest a ridiculous amount of time into a game just to get to a point where I'm having just as much fun with it as I am with a game like Dark Souls or Vanquish?
So with that in mind, I've decided to just stick with stuff like GGXXAC+ and KOFXIII, since they have the most/best single-player content. Stuff I can turn on and just have a lot of fun with without having to worry about the stress of fighting real people. I'm just not the type of person who's cut out for the FGC.