I think I am too much of a control freak to want to be depending upon and to have something electronic controlling a lot of things with regard to my home..... It would also not always be an appropriate or realistic response in terms of what actually happens, either. If the fire/smoke alarm goes off in my condo unit, it is usually due to a power failure but not actually related to any life-or-property-threatening actual fire..... Obviously, if I am at home, I always check, though! LOL! If it's simply an instance of just another power failure, well..... simply being a temporary situation (during which I am often actually at home), I would just as soon my front door remain locked, thank you just the same!
As for returning from somewhere and unlocking the front door and getting lights on almost immediately.....well, gee, I can do that quite easily -- all it takes is for me to first unlock my door and then reach in and flick on the light switches which are right by the front door! Gee, what a concept......