The last time one of my HDs got destroyed, it was on my laptop and the reading pin inside it's internal HD just broke while it was playing a movie. Admittedly, I was on a boat (research vessel) at the time and the engine was causing a sort of constant tremble which I assume must have been a contributing factor, but the thought of something like that happening and just wiping away that collection which I've spent so many hours of my life putting together and meticulously tagging is a bit daunting .. I consider a backup to be essential!
This collection is, after all, basically what I've scraped together since the last time I lost it all