Well, with people doing whole home solar, that wouldn't be an issue. You'd just need an inverter to power some appliances in the kitchen. At the very least, LED lighting hardwired into the home would drop electric usage by double digit percentages.
In addition to the electricity savings, there is an enormous gain in simplicity and elegance in removing a lot of high voltage wiring throughout every room of the house.
As I mentioned, the high voltage hard-wired smoke detectors are another unnecessary set of high voltage circuits ...