Downtime
Nothing like your server going down a couple of times to motivate you to touch up your backups.
I have automated backups running that back up all the users data (once a week currently). Unfortunately, I didn’t have backups of the configuration (stuff in /etc). Certainly, I could have done with out, but it would sure be nice to have that too. So I’ve done a quick copy of the directory for now before I integrate it into my backup scripts.
Having lost a harddrive recently and experiencing the odd issues with my server the last couple of days, I comforted by the piece of mind my automated backups have provided for me. I’m averaging probably one dead harddrive a year, but this last one though very annoying really didn’t do any damage (besides time). I recommend backups for everybody.
And as for my “users” who had to deal with the hours of downtime. Please contact be for your refund as specified in your SLA. Right. 
Anyways. Sh*t happens. Could’ve been worse. Now I just need to figure out a way to back up my backups to an offsite location.