Agreed. At a previous job, I set up a multi-terabyte SMB/NFS file server (Solaris, ZFS) with snapshots taken every 5 minutes. This was incredibly useful. The snapshots (in .zfs directories) were even accessible to end-users so that they could recover from their own mistakes without the help of sysadmins.

With such a setup, the only situation in which sysadmins are required are when end-users accidentally copy sensitive data to the file server, remove it, and need sysadmins to also remove the snapshots to permanently remove the sensitive data.