Backup Purposes

Why do we do backups? SimplestPremise?: BackupEarlyBackupOften... A list of refactored pages will follow I hope

To survive catastrophic failures, i.e. hurricane or tornado at the base station
to survive theft of LaptopComputers?
to survive brief power outages that may appear in your state or province unexpectedly, but with some regularity.
to survive accidental deleting of files.