A newsletter reader commented recently that we must always keep original documents (I assume that means on paper) because digital copies can be destroyed by viruses, hackers, shut downs and the like. Really?
First of all, paper is one of the most fragile storage methods available today. Every few weeks, I publish articles in this newsletter about some archive or other other facility where records are stored that has suffered a major loss caused by fire, flood, tornado, hurricane, earthquake, or burst water pipes. See this past week's article at http://goo.gl/EOO2cC about a noted history researcher who lost all his notes and other research (on paper) in a fire in his home. Millions of paper records of interest to genealogists have been lost over the years because of these disasters.
In contrast, preserving digital records forever is rather easy to do.