Snapshots are the best thing in the world for me on Arch. I'm specifically using it cause I like to tinker with exotic hardware and it has the most sane defaults for most of the things I care about. Pacman is great, but the AUR can be a bit a sketchy sometimes on choices that package authors make. Having snapshots every time package changes happen that I can roll back to from my boot loader is _awesome_. If you've ever used a distro that does kernel backups in your boot loader, it's like that, except it's whole packages at a time! And being able to use subvolumes to control which parts of a snapshot to restore is awesome. I can roll back my system without touching my home directory, even on a single drive setup!