It's just life. A lot of what may seem important with our backups really isn't. Whatever we have produced today will return to the earth, and will be reinvented by generations in the future.
It's their lives to live, not ours.
Imagine having to take care of the backup of your ancestors data on 10 generations, that'd be ridiculous.
You also don't really know what future people might find interesting. Archaeologists like to sift through ancient trash dumps :-)
I had an idea about this but realized it would be far more useful for more sinister purposes and stopped.
I want to sit down and figure it out one day given how prominent it was (and still is for many critical systems).
There was an earlier Empire I wrote in BASIC, but alas it was lost. Some of its vestiges remain in the Fortran version, such as a variable named Z6. (Variables in that BASIC were one letter and one digit.)
My oldest files are from 1977 - proof:
https://github.com/DigitalMars/Empire-for-PDP-10
My files have gone from magtape to 8" floppy to various 5.25" floppy to 3.5 floppy to zip drives to cdroms to dvdroms, then to hard disks of ever-increasing size.
(My old hard drives are completely unreadable now.)
I'm sorry I never kept my punch card decks. I'm sure there was nothing but crap on them, but it would be fun to see what kind of crap it was.