US, old house, no neutrals anywhere, 10. Most of my switches are no-neutral Zwave with a few Lutron Caseta where I wanted dimmers. A couple of them are still the original Despard switches because there’s no room for a 4-gang box between the door and window, so those have Zigbee bulbs.
One button bedtime. I live alone, and when I get in bed, I push a button on the nightstand, all lights go off, the doors lock, the plug controlling an outdoor heater/fan shuts off, the thermostat adjusts, the living room TV turns off, and the bedside lamp comes on at 10% brightness. No lying there, wondering if I forgot to turn something off. Also, motion and presence detection for lighting; I can wake up at night to go to the bathroom, stumble in, the lights come on bright enough to see, but not bright enough to blind me, then I stumble back out and they turn off on their own, one minute after I’ve gone.
I just use cheap IP cameras, Frigate, and Tailscale for remote access. Monthly cost is zero, upfront cost was a Coral, I can check live feed and events whenever I like. Mine runs on a server I already had running, but I have an embarrassing number of cameras, and if I didn’t have the server, I’d have just thrown Debian and Frigate on an unused computer. You don’t have to enable the motion or object detection if you want only live feed; just don’t put it in your config file. You can also control how long events (if you record them) are stored.