I set up Immich last week and I absolutely love it. Docker is my "happy place" and I found the setup pretty straightforward, though it does have some rough edges that I anticipate will be sorted out as the project continues to mature.

I showed Immich to my partner and they loved it so much that we've ordered significantly more storage for the server to accommodate it. We're currently using both Google Photos and OneDrive, but with this we'll be ditching OneDrive and filling that niche with Immich (as well as expanded network storage in general).

The website and documentation is super clear about not using it as the only source of photos. This is why we'll keep using Google Photos, and why I'll also be backing up Immich and portions of the network storage to B2 via restic. I've used this snapshotting pattern for my general server data for years, and it's even saved me a couple of times. Backups are something you hope to never need to use, but boy are they satisfying when you do need to use them and have them set up properly!