[darkwater]

I think you are getting it wrong, remote switching a light with your smartphone is almost a byproduct of home automation. Nice things you can have: turning on/off external lights at certain conditions; dim bathroom lights at night so if you go there in darkness you won't be blinded; turning off lights automatucally when you have kids that keep forgetting about it (I tell them each time anyway like in the old times just to teach them); blinders that go down at sunset, but only when it's cold enough outside etc etc. You might think you can live without this, you absolutely can, just like you can live without many other things.