You have to leave light switches in the on position if you want to control them with a voice assistant.
Take smart lighting, for example. You have to leave light switches in the on position if you want to control them with a voice assistant. But without a physical switch, you might confuse guests. Children also may not have access to controls through a phone or be comfortable with voice controls. People are likely to turn your switches off; years of muscle memory make it a tough habit to break. You can get around this by buying smart switches, but think carefully about whether you want to replace your original switches or have a second set side-by-side.