The main reason is because my laptop and desktop are unable to keep up with the releases and quickly become obsolete. My second reason is because many great games such as Alan Wake, L.A. Noire, etc are avalible onlu on consoles until much later. My third reason is because very few of my friends play PC games; I would rather play with my friends then play by myself. Another reason that is subjective is because I feel most games play better with a controller (and yes, I know you can plug the controller into the PC but I don't know how and even if I did I wouldn't) while sitting on a couch. My wrists get cramps from playing TF2 after an hour (but that game is worth it XD) on a keyboard and I cannot fathom how I would complete a lengthy game such as Skyrim without my hands in tatters. Most of the games I play are FPSs, action-adventure, and Western RPGs as well and I find I play better on consoles due to experience.
EDIT: By no means does this make PC gaming bad. In fact, I think PC gaming is probably the best because of the potential. You can have a $2000 desktop or laptop and play anything at the highest resolution and you can do certain things to enhance your gaming experience that you cannot acquire on most console games. Internet is rarely as much of a problem as it is with consoles as well.
EDIT: By no means does this make PC gaming bad. In fact, I think PC gaming is probably the best because of the potential. You can have a $2000 desktop or laptop and play anything at the highest resolution and you can do certain things to enhance your gaming experience that you cannot acquire on most console games. Internet is rarely as much of a problem as it is with consoles as well.