I love Google Photos.
I go through smart phones pretty quickly (every 6 months or so) and in the past have been horrible about backing up my pictures. The net effect being I’ve lost several years worth of pictures. Google Photos has solved this problem for me. It automatically backs up my pictures to the cloud. And with a couple of settings tweaks it backs them up to my Google Drive.
Even more awesome Google Photos will soon do automatic document scanning… along the lines of this: