[chihuahua]

I have some lights on mechanical timers so the living room has a minimal amount of light in the evening, and they turn off automatically at midnight. That's useful to me, and it was cheap and simple. Haven't had to touch it in 10 years, except to adjust the timers to the seasons. The mechanical timers (Ikea) predate Alexa, and it's cheaper to just keep using them.

I also have a porch light that used to have a light sensor, but those sensors keep failing after a few years, and it's a hassle. Instead, Alexa has a schedule for that porch light switch, and you can specify "turn on at sunset" and "turn off at sunrise", and it's perfect.

And I have an Alexa rule for turning off the other lights that it controls (living room, dining room, family room, hallways, but not the porch light) at midnight. Simple and useful in case I forget to turn the lights off.