but at least I can sleep well at night knowing that the only points of failure are within my control
Hahaha, when he said that I immediately thought I'd like to see him control flood, fire, theft or "other acts of god". Like you say, backups need to be local and off-site. No single point of failure, that is the key!
The thing which would take out all of my backups is if the entire country was flooded or if there were a coordinated attack on all places (it's spread out throughout the country)