i mostly use them for proprietary stuff or for software that is incredible painful to package (mostly electron apps). i will probably never use them for anything that actually matters but i also use rolling release distros everywhere so latest release is never too far. for testing latest version of any software i prefer appimages since they are simpler and don’t need a messy setup as flatpak, but i also won’t use them pass the testing phase and i prefer packaging the software if possible.

snaps, on the other hand, will never go near any of my systems. not even by accident