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I prefer smart switches to bulbs myself, but not everyone is comfortable doing electrical work or setting up a local home automation hub.
I use them to simulate home occupancy. The lights in the rooms facing the road simply turn on and off at night so the house never looks empty.
I also setup my bedroom to simulate a sunrise with the lights turning on low and slowly getting brighter before the alarm goes off.
I was very dismissive of smart appliances but then again I have some skill in the kitchen. For people who manage to burn water in a microwave or just don't have the time, the right smart appliance could be realy helpful.
I have mixed feelings on fridge screens. The concept seems great. It's essentially free real-estate. Having a recipe visible but out of the eay, along with multiple, visible timers, could be great. But not when it comes with high costs, ads, add on expenses, lock in, etc.
Spending long periods of time in moderately sealed boxes breathing each other's air.