Factually better control system - you may like controllers more because that is what you are used to, but Mouse + Keyboard gives you far more control and possibility.
Far more games available - since you don't have to worry about "lol backwards compatibility", you have a much larger selection of games available, and it's very rare for something you have to become obsolete or unplayable because you upgraded.
More and better sales - You aren't limited to retail stores and the corporation controlled online stores, so you get lots of big names like Steam, Amazon, and GoG.com for cheap and downloadable games, but also lots of little things like the Humble Bundle.
Less prone to failure and less expensive to replace - There aren't common issues like the Red Ring, and when they DO fail and aren't covered by warranty, they are much simpler and less costly to replace.
Less expensive overall - Considering only a few parts are actually contributing to making it a gaming PC, they are typically less expensive, especially when you consider that many of those parts are hardware that is more advanced than what you'll find in consoles.
More customization - Mods make the games last so much longer. Maps and custom content from the player and even custom game modes are far more common on PC than on consoles.
More potential - you get far more out of a gaming PC than you ever will out of a console, and typically on a longer lifespan.
-- Joyrock Fresh from my first justified ban. Ever!
Okay, but I'm not going to stop playing either PC games or console games? So...
--
... as if rights are like muscles - the more you use it, the better it gets. Indeed he may be exercising his first amendment-- but he's an IDIOT! - A. Scalia
Ayuyu posted... I'm forced to agree with Joyrock here, though I still like consoles.
You know very well that I don't hate consoles tbqh. I mean, I have a good chunk of B8 on my PS3, which I play regularly. They still have fighting games and several awesome exclusives.
-- Joyrock Fresh from my first justified ban. Ever!