This is a VERY touchy subject. I have very good friends on both sides of the spectrum. I was reading a random article on the internet about the PC gaming industry that got me thinking about the pros and cons of both PC and console gaming.
I think that on of the most obvious advantages of console gaming over PC gaming is software and hardware reliability. Now I am not talking about the reliability of the hardware in the console not burning up, or giving you the RROD, but the fact that when a new game is released, you do not have to worry about spending hundreds of dollars on upgrades. You don't have to worry about whether or not your DirectX 9 is good enough, or you need to get upgrades for that as well. You simply go to the store and purchase the game, knowing that it will work on your console, unless of course you pick up a game like Bully for the 360.
Another major advantage is cost. You can pick up a gaming console for under or around $500 bucks. If you want a PC that can run the latest games at a speed that is faster than a snail, you will easily pay twice that much, and that is if you build it yourself. If you guys know where I can get a good gaming PC already built that can run Crysis (at its optimal or at least close to optimal settings) for under 1,000 bucks, please tell me!
Multiplayer gaming is also made a bit easier. The 360 has a built in modem that makes it as easy as plugging in your ethernet connection and start gaming, of course with a fee. The PS3 and Wii have built in WiFi capability that makes it even easier to play online, of course its also free.
Also, the ability to go to the video store or logging into Gamefly.com and renting a game is easy. As far as I know, you can't just rent PC games anywhere (I could be very wrong, oh well) because of the ability to copy games. This also makes trading in PC games very difficult. I know that the more popular US game stores such as Gamestop/EB Games does not take PC games for trade. The only place I know of that takes used PC games in my area (Seattle) is Half-Priced Books.
This last one is my personal opinion, and that is the learning curve. The 360 and PS3 have 10 buttons, a D-pad, and two analog sticks that are also buttons. There are 105 keys on a standard keyboard.