[erikdared]

Google Photos would be the most difficult thing for me to leave behind. Nothing to my knowledge even comes close in terms of functionality. A year or two ago I tried Microsoft's equivalent in OneDrive and it was absolutely abysmal, the web interface barely functioned with a few thousand photos.

Not to mention the search works so well, I don't know how I'd replace it for finding things. I would take an eternity to go back and tag all of my photos.