Smart lights are the killer app for Alexa. There's no going back once you have it. And the only thing keeping most people from getting smart lights is the cost which will fall.
No? I don't think I've ever met someone who owned a Clapper. In my mind, it's the epitome of gimmicky late-night TV/Skymall products.
It's pretty nice to say, "Alexa, turn on away mode" as I leave the house. Instead of going through the whole place, turning off all the lights, locking the back door and adjusting down the thermostat.
I have friends who have it, seems neat but still very "eh" for me.
Do you plan to live alone forever? 'cause roommates, spouses, and especially children tend to make turning the lights off as you leave the room quite futile.
Can't control roomies but that's about it.
Personally I've gone with SmartThings (Samsung) to control the home tech and use Amazon as the voice interface. This allows me to be reasonably agnostic of vendor and interfacing standards (ZWave/Zigbee/Wifi), allows me to use a scripting language to control some aspects of automation (using Webcore app) and still use Amazon to issue voice commands to the same devices.
Kids love it, I like it, but not got full wife acceptance yet, she gets frustrated turns stuff off at the wall and then all the automation needs debugging!
Lots of people have switched away from smart things for this reason.
The bigger thing is that I just don't see huge benefits to smart lights, and potentially a lot of maintenance headache - I just don't really mind walking to the switch.
An automated blind opener that is set to slowly open automatically based on what I've set my phone alarm to that day, though, that I would pay a lot and put up with a lot of crap for.