Sounds like a good reason to use DC in the home. Edison would like that. He was a proponent of DC until transmission over distance became an issue that AC(Tesla) solved. Interesting article:
They didn't teach that in school!
Remember, LEDs are diodes, and run on a forward voltage of less than 2v usually. So even at 5 volts you'll still need to drop the voltage, easily done with a dropping resistor.
Kind of funny, how it all started with DC, and is going back that way again.