the only thing in my house on wi-fi is my laptop... and that's only because it has a battery so I don't have to worry about plugging anything in...
there's enough lag playing over the internet I don't need any problems locally with a wi-fi system...
I agree that wireless is only useful for things like hot-spots, with portable machines.
Any machine that's tethered with a power cable, AV cables, etc. should have a hard network cable as well.
Laziness to run a wire is no excuse
