90% of smart devices are for novelty, or for you to spend more time setting up and maintaining their automations than they save you in being automated.
But that 10% is magic. A fan that switches on when air quality falls below a threshold? Not that useful in a living room, but in a workshop setting - especially a shared workshop setting? Awesome. Just awesome.
A well defined use case, in the right setting, and smart stuff can be genuinely very useful. Usually that’s not how they’re used - i know, because of the 15-20 smart things i have only one or two are genuinely useful.