The premise is true, how long will it be before the light switch dies out? 

I feel that one of the biggest issues with smart homes and their uptake will be the battery life on devices that will control them. It may be slightly left field of an opinion but my Samsung can barley take the general grind of a full day let alone trying to pump more out of it. 

The Smart home will come but as Ted has stated it's more inconvenience right now that real help.