I never got a dedicated game console and see no reason to start now.
I. Bugs, bugs, bugs!
Every Xbox or PSx game I've seen that later came out for the PC was loaded with bugs on the console - there would be crashes, corrupted games, freezes, etc., but by the time they came out on the PC, about 75-80% of the bugs were fixed. Patches made after that resolve about 70% of the rest of the bugs. Where are the comparable patches for console games? AFAIK, they don't exist!
II. Features, man
I remember when Star Wars: Knights of the Old Republic, a good RPG for SW fans, came out on Xbox. I watched a friend play it. Everyone was a bunch of clones! No, not the clones from the Prequel Trilogy, there was just too much recycling of 3D models and skins! It wasn't Attack of the Clones but it sure felt like it. When it came out on the PC, not only were there less clones, there were more side-adventures (mostly bug-free, I might add) to go on!
Now, that's just one game. But there were others - none come to the top of my head ATM, but there were more. Another reason to stick with PC's.
III. Price
Console games tend to be $5-$15 more expensive than their less-bug-ridden feature-enhanced PC counterparts. 'Nuff said.
On a more personal level: Computers, unlike consoles, can be easily understood. If something major is going wrong, I can pop open the case, look inside, and almost immediately see what to test, what to fix, what to replace. And PC's can be upgraded. If the game is lagging I can go upgrade my memory or my video card. Consoles? AFAIK only God and the makers of the console know what's inside it and how to fix a hardware issue.
Sorry if I come across a bit harsh, but i've never gotten the point of consoles.