But you can put them in places in your home where it's not practical or aesthetic to run cabling to plug them in (e.g. fireplace mantel or hung up on a wall) and have a battery life that is measured in weeks or months rather than days.

You'd be right about the superior picture quality, though, but as the common use would be family photos that you see in passing to make you smile and may be quick snaps, the quality of e-ink is likely to be enough when it's a quick photo of your loved ones.