It's a mix of getting rather tired of it and, more importantly, he doesn't keep up with gaming as much as he used to.Did he say why he wants to retire? I mean its not like he does the tweeting thing as a full-time job. He can tweet whenever he has free time. Don't understand just totally abandoning it. Was it because Real Kaz is no longer CEO? Maybe is he the real Kaz :)
All respect lost.