In practice, Google Photos is excellent. I don't worry about my photos: they sync to the cloud and I can delete them from the device to save space. Being able to search through my photos by person or even object ('cat') is convenient when looking for that one photo.
Also, for someone who often does informal photo sessions for friends or strangers, being able to share links to groups or albums of photos is super convenient. They can download the full album as a .zip, too.
Pair this with the Pixel's excellent camera, and I don't even miss my mirrorless M4/3rds. The only thing I find myself consistently missing is a good telephoto. I know Moment makes a case and accompanying lenses, but I use the $40 Google case.