I have yet to understand why so many supposedly intelligent able-bodied people feel the need to buy this "sheet". Are you all too lazy to get off your backside to switch on a light, or adjust a thermostat? Or is this all in preparation for humanity to evolve into something incapable of doing the simplest of physical things?
Necessary? Heck no. Convenient? Heck yeah. To be able to schedule my lights to go off every night at 10pm without me forgetting about it, for the last 5 years, has saved a ton of getting up and down. And having the front porch light come on for me when I get home instead of fumbling with the keys in the dark is also nice. And being able to open the garage door remotely when the kids lock themselves out of the house. And having a cheap way to play the same audio in the living room, kitchen and back patio when I'm working or having a party is a lot cheaper with Alexa than with Sonos.
I had two 'old style' programmable thermostats that cost the same amount as a nest when they were new. Programming that thing takes 15 minutes standing there in front of a faded LCD screen. 4 temp changes per day, Weekday, Sat, Sunday. Change it once every few months as the weather changes. No thanks, throw in a new programable one and I can do both in 3 minutes from my phone, and I set it for the temperature I desire, not the temp it should come on and off at, so it figures out how to get it there, meaning no more adjusting every few months based on the season. And btw, don't take the free one from the power company or they'll set you to 76F in the summer and you'll end up being 86F because it can't keep up.
The biggest thing to consider, started with 'smart bulbs' not for the automation, but so I could change the colors for holidays. I started with echo's just as a music streaming device. The garage door opener came with Alexa when the motor died on the last one. It comes built in to all new TVs and stereos. I didn't spend a dime up front fot he automation part. It all came free, so why the heck not?
So yeah, looking at it as getting up to turn on a light would seem dumb. Add it all together and it's worth the effort.