There are lights in our home that are simply hard to get to, especially in certain cirumstances. I could probably rig up a physical switch with some extension cords (potentially dangerous) or rewire the house (expensive and messy) or I could use a wifi bulb or switch.

And once that was the case, it just made sense to have others for convenience, too. For instance, we can turn off almost every regularly-used light at the same time now when we go to bed. The remaining ones are lights we only turn on for a short time anyhow, so they don't get left on.