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Lots of time I'm lying in bed, almost falling asleep and suddenly realizing I left the kitchen light on. In fact, I'm not sure I did. But it doesn't allow me to sleep, so now I need to wake up, check the kitchen for a light that might not even be on. At that moment I'd be willing to pay a lot for a button on my phone to turn off all the lights.

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I have a Roomba and if I don't close my bathroom door at night, it always gets stuck in the bathroom when it goes off in the morning. So every night, I make sure the bathroom door is closed before I go to bed. I would not pay anything for an app that closed my bathroom door. I just make sure I check at night. It still doesn't make sense to me.

Roomba makes sense to me. Sweeping is hard and takes a significant amount of time. Flipping a switch is not hard and takes no time at all.

One use I like is having the lamp come on gradually about 20 minutes before my alarm in the morning.

That's cool, I like that one, except the sun does that for me in my case. But if I needed to wake up earlier than the sun, I could see that being useful.

That is a pretty cool use case

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