Simple hypothetical: "A disaster hits and the workstation owner is unable to return to the location the workstation is stored. During that time period the workstation is stolen by a gang of looters."
The good thing though: the effort is low. You think through it once and you have your encryption and backup strategy for a long time.
I have a NAS System which only runs when i need it, i scrub every month and that basic setup is the same for the last 12 years.