ZFS doesn't lose your data when the hardware falls over, or silently corrupt your backups. It notices when things are going wrong and optionally fixes them. So

ZFS doesn't lose your data when the hardware falls over, or silently corrupt your backups. It notices when things are going wrong and optionally fixes them. So the most compelling reason to use ZFS is if you'd like to keep the data you're putting in the filesystem. There's also a bunch of sensible admin tooling on top.