Tell me if I'm making a mistake. I think I am. I just bought a SmartThings hub and two z-wave switches so that I can schedule my interior and exterior garage lights to turn on at night. That's stupid right? I should just get 6 white A19 Phillips Hue lights instead? Those can be scheduled too, right? I have a google home and have google assistant on my phone. Is there any upside to using SmartThings?
Originally I had intended to get like 12 z-wave smart switches and control lighting around my house, and then scaled that down to just these two. The more that I think about it, so long as Hue lights work in the cold, and work as long as they have wi-fi access, and can be scheduled and work with google home, SmartThings seems stupid just to control 6 lights, right? Am I missing something?
If you are only going to schedule lights to turn on and off, then SmartThings is probably overkill. I have a SmartThings system in my apartment for security, I have two door sensors, two motion sensors, a power outlet, and a siren alarm. I've also configured it so that the lights all turn on a vibrant red should the alarm be 'tripped'
Otherwise, I can't think of any specific functionality that ST offers over the Hue app (or other apps that "talk" Hue and other lights at the same time) for scheduling and/or geofencing lights. Actually, there is one small advantage to SmartThings, they offer a fob which can be used without a smartphone to determine if someone is present at home.
If you expect you might want to interface with other devices like sensors, non-Hue lights, cameras, temperature or humidity sensors (note that most ST sensors also have temperature built in), then the ST hub will be able to coordinate all of those.