That sounds good enough for 99%+ of all average users needs. Anything beyond that can become an obsession IMHO.
Yeah, for home users.
Certain businesses have legal responsibilities to maintain security of data, and could face serious financial penalties if the data got out. Some Financial, Legal, and Medical operations come to mind.
For instance in this article, someone should get in serious dodo for the ATM hard drive that had data recovered from it.