Actually, no, I haven't played any HD re-releases. I don't play games again just because they have sharper graphics. That just oozes of graphic-whoredom. It's not like the upgraded graphics change the actual gameplay or story. It's the exact same. That's why I'm always confused when people get excited about these things. UNLESS...You've never played it before, didn't finish it, or are interested in the content never released before. I get that.
I just see so many great games out there that I'll never have time to play. Replaying ANY game is never in the cards for me. I can only assume that people who play this have already tapped out all those other great games. It's a weird mix of jealousy and bafflement that I'm feeling.
Like I said above, though, whatever floats it.