[msh]

I love that I can quickly click on a person and then get all the photos with that person. The same for a location.

The "memories" slideshows that iPhone or gphoto generate are sometimes also very nice to see.

The search functionality also comes handy once in a while. So that I can search for pictures of certain things.

For sharing photos the shared albums are also very easy to work with. Both to create and the receiver to import any interesting photos to my/their library.