Most users are generally fine with just storing their content on one standard hard drive until they have a loss of data. At that point your eyes are opened to just how vulnerable you are to a personal digital disaster. If you want to know what it is like, just go to your own storage folder, highlight everything and hit DELETE. It can happen, it does happen and it isn’t a matter of if, but when. Preventative measures are the only way to avoid such losses and the easiest defense is a good offence.