It's not just fear of electricity. Here in Australia you have to be a licensed electrician to perform any works, even to do something like replacing a lightswi

It's not just fear of electricity. Here in Australia you have to be a licensed electrician to perform any works, even to do something like replacing a lightswitch or running cable inside a wall (even running ethernet cable, although there are special low-voltage electrician's licenses for data cabling specialists that aren't as intensive as a "real" electrician's license) - unlicensed electrical work would void your insurance, make it difficult to sell your house (would need to be inspected, remediated and brought up to code if necessary, and signed off on by an appropriately licensed electrician), and could expose you to civil and even criminal liability (if your unlicensed electrical work harmed someone). I'm not a licensed electrician, so if I wanted to upgrade my house to smart switches I'd have to get someone in to do it. For most people here it's a lot easier to just screw in a bulb.