Can a 360 use the internet?
Can a 360 email?
Can a 360 do word documents, file storing, view pictures, edit pictures.
The list goes on and on.
When you pay for a computer, you don't pay strictly for gaming. You are able to do SO much more on a computer in SO many respects as compared to the 360 or ps3.
The consoles themselves are a bargain, no doubt. But that is only because they are barebone systems. The motherboard is made ONLY to support what is necessary to make it run the games. You can't install any other software or 3rd party hardware on them. I know, you can modify them... big woop, we can too (and much better I might add).
Back to the 'barbone' idea: When you utilize a motherboard to only run specific processes, it is much easier and cheaper to make the motherboard because you don't have to leave it open to support other things. For example, my motherboard supports a lot more RAM then I use, supports RAID HDDs, supports firewire which I don't use, and the list goes on quite extensively. The console systems are literally dedicated to just gaming and only gaming at the level that is prerequired. You are guranteed good graphics because you pay for the system and then fork out $50 for every new game. That explains why it is cheap. I am almost positive microsoft and sony must get a cut from the games. That is the only way they can ensure income past the price of the original consoles themselves.
I prefer computers. I own a PS2 and never really use it. Online gaming is so much better, and only in the past year or two did xbox come up with the online play and headsets to immitate what pc gamers have done forever. I think the battle between the two have their own ups and downs in many respects. Generally, consoles are more portable and easier to play with friends, you just need controllers and a TV. LAN can be, but you need to bring your whole computer, the screen, and any other periphials you want. Then, you have to connect to the same network and connect to the host computer. My point, obviously, is the ease that consoles put into gaming inside the community and with friends and now have made it possible to game with others around the world.
Oh, one more thing. Consoles allow you to connect to any TV which pretty much everyone owns one. PC's... you have to buy a screen. Yeah... oh, which also explains the graphic quality. The resolutions in consoles are limited as compared to PCs. TV screens run in the resolution of what, 640x480 or less? I want to say it is pretty small if I remember correctly. As we all know, having a small resolution aids the ease of rendering graphics and modules... but we can change ours
That is all I can think of for now, I might think of more and add some later.