Because the Xbox One is $500? Plus again it's bad messaging on MS' part, they initially pushed it as completely necessary, then said you didn't need it, then sold you it anyways with the console along with reports coming out that the console could actually be significantly cheaper without Kinect. On top of that at least among core gamers who will make up those initial buyers, Kinect is a bad word. They don't like motion control or spotty voice commands. And what has MS done to really push Kinect as the future? There aren't any promising games and most people seem to say it's confusing to use and the second the voice recognition doesn't work properly, they never want to deal with it ever again. The guys on giant bomb basically called it a hot mess, and so have Cheapy D, Wombat and Shipwreck for that matter. They've said some negative stuff about the PS4's UI as well, but not nearly to that extent.