It’s so hard to throw things away. Even sending things to the recycle bin on the computer is hard, but must be done every once in a while. It is good practice to have everything backed up in ATLEAST two places.
It is also best to do this at the time of creation or download, depending on what it is.
Photos are a MUST to back up in a few places, which of course I do. But even with that said, it’s still hard to delete them off the hard drive . . . as you can tell from the screen shot here 😛