It used to be you could find a box of photos or keepsakes that you inherited to look back on how things were or when you were a kid. Now, most of that is stored on phones, and most parents probably don’t think to share or save them in a way to be passed down in the future.
For a long time, when I’d replace a computer the new one’s hard drive would be so much bigger than the old one I would just copy the old computer’s entire drive into a folder of the new one - I think I did this at least four times before I decided that I almost never looked back into those older folders and found anything valuable.
I looked back 15 years like that once and found: clip art, and banner printing software for a printer I threw out 14 years earlier.