Aside from all the cool stuff you can do with your home automation turn on lights/appliances remotely or scheduled but the ability to increase safety and security within.
let's say there is an medical emergency (at night) you live on a very dark street and the numbers are very hard to find. very simple solution. replace your existing porch light with a bluetooth/changeable light bulb. use your phone to change the bulb to blue or red and relay that information to the 911 dispatch.