I've always turned appliances off before going to bed, don't know why really, my father used to do it so I just carried it on.
We have a gas cooker, so the only thing the mains power (13A plug) is the clock and igniters, it has several gas shut off systems built in, yet if I go away for more than a day I turn the actual gas valve to the cooker off. The TV, Sky box gets turned off at the wall too, the only things running overnight is the fibre modem, wifi router and my servers, not for any particular reason do I turn everything off, just a habit.
I don't have location or gps or wifi / mobile network on my phone unless I need it, then it goes off after I have used it, Bluetooth only goes on if I am connecting to my car's hands free etc.
My BMW has a "connected service" that I can turn things on and off from my phone, but I refuse to pay the stupid subscription when I can go to my car and do it for free.
I am not against "connected things" I think they have their specific places, for example for my previous company I designed a 4G interface unit that hooked up to the Debug port of the device, for monitoring and remote maintenance, we had the MVNO set up a private APN that we could tunnel into through a VPN on their firewall and we could talk to the devices securely, this saved literally hundreds of hours of engineers visits, sometimes they were across the other side of the country. But a WiFi connected fridge? Come off it.
I've also used it on a solar install at the rail side to monitor battery usage and capacity and if the thing is getting enough solar energy to keep the batteries charged and run the system.