yeah.................i love it when people say that you have to spend thousands of dollars to make a good gaming rig and how you only have to buy one console every 5 or so years. thats is utterly pure [censored]. of all the people that i know that have consoles only one of them has their original system (PS3). and even he had to spring for an extra harddrive afterwards. everyone else is on their second and some of them their third console. you dont have to upgrade your PC ever year either. every game today will play just fine on the nvidia 9800s which are almost 3 years old now. the only reason you would have to upgrade is if you want DX11 features.
as for getting viruses on your computer that is your own damn fault. unless you going on warez sites or more seedy pormsites or your opening up every email from total strangers out there, you shouldnt be getting lots of viruses that cause issues. and if you are doing that stuff without good AV then you deserve to have lots of viruses on your computer.
as for the complexity of using a PC........i taught my grandmother who had trouble with remote controls how to use a PC. if you are saying that PCs are difficult to learn then you are admitting that my grandmother who was in her 60s and is about as technologically illiterate as you can get is smarter than you.
someone mentioned console buttons on the whiteboard........i wouldnt necessarily worry about that. PC keyboards are pretty standardized now. WASD , spacebar for jump, mouse buttons for attack and block, E for action the number keys for hotkeys etc. i dont really see that changing much in skyrim the only thing im not sure how they are going to to is sprint and the second attack button since we can use two hands now.
edit: i didnt mention the wii systems that some people have. all of those systems as far as i know are also the original system however i dont factor them in since they only get used a couple times a year at parties.