We build smart home, so you can control each and every appliance through your smart phone from any part of the world.
The simple answer is just to make life easier. We invented tv remote control, so we didn't have to get out of the chair to change the channel. Some people own complex media systems, that require the owner to press 10 different buttons on 5 remote, just to watch a movie.
Your Home is a place where you and your family get together after spending their whole day out. so it must be heaven on earth.