> You rarely have the need to buy a whole new box.
This is the number one reason why I love the PC above any other kind of computing machine. Need more disk space? Sure, go get a new disk, you may not even need to remove any of the others. Want a better graphics card for that new game? Easy as pie. Your processor died because the fan was malfunctioning? Too bad, but luckily those two are the only things you'll have to pay for. The list goes on.
I bought my current PC on 2009. The previous one still had some components from 2002.
In the enthusiast PC world you swap out parts and upgrade your system bit by bit.
In the emerging post-PC world you just sell your old device and get a new one, not unlike how cars are treated. I doubt anyone has trouble unloading their old iPad 3, they probably get a decent amount of money for it if it's in good condition. This just does not happen with homebrew systems, the risk is too high.
This is the number one reason why I love the PC above any other kind of computing machine. Need more disk space? Sure, go get a new disk, you may not even need to remove any of the others. Want a better graphics card for that new game? Easy as pie. Your processor died because the fan was malfunctioning? Too bad, but luckily those two are the only things you'll have to pay for. The list goes on.
I bought my current PC on 2009. The previous one still had some components from 2002.