Hard drive backups are like the socks of gifts you give yourself. They're initially about as unexciting as gifts can get, only to become the best gift ever in a pinch. Got a meeting in 20 minutes and your normal sock reserve is empty? Thanks for the bag-o-socks, Uncle Steve! Your HDD just exploded, taking the past 3 years of your digital life with it? Thanks for the backup, past-me!