I have all apps I use daily in the appimage format. Yesterday I decided to try btrfs for my root partition and did my annual Linux reinstall. All my apps were already there and ready for work from the start.
I also have a usb flashdrive always on me with the same appimages. Just in case I’d wipe a hard drive by accident and wouldn’t have an internet connection or something like that (in case of emergencies). You can’t do this with flatpaks or snaps.