Let me add one other tid-bit...
Or let me ask a question...anyway:
Have you ever been through a burglary or house fire?
Those who have been through such a traumatic event, even after many years, will store things in a safe that many other people may not.
CD's, family pictures, deeds, cash and coin, collectibles, cameras, film, any important paperwork, and the list goes on! If it physically can be put in the safe, it will be!
One thing though, buy a small fire-resistant box made especially for storage of media items (film, CD's, hard drives, etc.) in which to place any temperature sensitive items, and then store it inside the safe. Better to have extra protection than not enough is my motto.
Of course, I don't have anything of merit that would require purchasing a safe since all my stuff was lost in a tragic boating accident.