I would hate it if the NSA knew I like it to be 67 at night!
Seriously though, I have yet to be impressed by any of these smart appliances. I just have never felt the need to adjust lights and my heater with a phone app. Nor spend hours setting it all up. (A lot of these items seem to be either very expensive VC products like Nest or Chinese companies who purchased disused US trademarks like Westinghouse and Zenith and have low build quality and very poor user interface, not to mention may have Chinese government spyware on them.)
And LED lights obviate the need to turn lights off. An 8w bulb can be on 24/7 at a cost of about $20 per year at the most expensive electricity tier. Setting up a program where it is only on 25% of the time thus saves $15 per year at most. Not even close to being worth the added up-front cash and time expense.
It looks like a lot of these smart devices are getting hacked and turned into botnet slaves to send out spam emails from your home internet connection.
The big improvement I saw in lighting next to LEDs is not smart timers but installing dimmers on every overhead light. It is quite nice to have a slight warm glow from overhead after 8pm.
