We all have them, some are good, some are bad.
I have loads. Most are on a hard drive, but I still have loads of photos of the family from long ago. So how long do you keep them for? Do you go through them often and start to delete some that are on the hard drive, even though they are doing no harm there and they are not taking up much space either?
But then, some are of other people from long ago - some you never see again. So do you throw out or delete them or just leave well alone? You never know, those long distance people may turn up again