There's probably lots of reasons why the over $1000 PC gaming market is in decline.
There are the people that just grow out of it (I am one). But the big factor here is that consoles are taking over gaming. It used to be the fact that PCs were way better for gaming than any console, but now that consoles have caught up, PC gaming is becoming a niche. (BTW, I now have a PS3 which is gathering dust, as I just don't have the time to play it)
Microsoft does deserve some credit here, as they do have a big stake in the console market with the XBox.
I have no time for games any more either, I stopped playing games frequently about the same time I stopped buying UV reactive IDE cables and blue LED fans.
But I think it also depends on what kind of games you're into. For me first person shooters are best played with mouse and keyboard where as fighting games (like Street Fighter) or sandbox-style action games (like Prototype) are best played with a controller. I know you can interchange your interface devices these days, but I find myself still thinking, FPS? I want to play that on a PC, or sand-box style action game? I want to play that on a console.
There are the people that just grow out of it (I am one). But the big factor here is that consoles are taking over gaming. It used to be the fact that PCs were way better for gaming than any console, but now that consoles have caught up, PC gaming is becoming a niche. (BTW, I now have a PS3 which is gathering dust, as I just don't have the time to play it)
Microsoft does deserve some credit here, as they do have a big stake in the console market with the XBox.