And we should also work towards making that a standard, too (i.e. like wall sockets are standard for power, Ethernet sockets should be for data). I'd agree with the notion that "smart" (I'd prefer to say home automation) devices are the way to go, but highly disagree with everyone "Oh just key-in your Wi-Fi password, and good to go!".

Air is a shared medium with inherent collision problems. Avoid it at costs that slightly exceed convenience.

EDIT: Also, home automation. In most people's lives, one's "home" is one of the most static things in life. If anything, your home would be worth spending an additional thought or two on proper planning, to avoid headaches that'll haunt you later.