I think part of why I play so many games on consoles that I could get cheaper on PC is that I actually sit down and play the games on the console.
I've come to the realization that PCs having the ability to do so many things really just doesn't let me sit down and enjoy a game. I'm too scatterbrained to do it. I play MMOs, sure, but I'm constantly tabbing out and checking **** on websites, my email, etc. On a console, the limitations are such that if I'm playing a game, that's all I can really do. Of course, I'm still checking **** on my phone, but overall I get more gametime out of a console title.