If only banks knew this!
They actively coax you into receiving your bank account statements as PDF, but I haven't found ANY bank which signs the PDFs (while bragging about security all the time).
I wonder what happens if they lose your money due to bugs or even intentionally - will they then happily accuse you of forging the PDFs because they're unsigned?
With paper that'd be not so trivial, in my country the paper often has some special format and the paper itself is of a special type, and it ages and you cannot easily guess the printer which was used.
Hence I still demand all my statements on paper. Same for utility companies, health care, and other institutions which want to convert their regular physical bills to PDFs.
I also demand paper because the concept of forcing the customer to manually go to N websites every month to download PDFs is idiotic. Nobody pays me for that wasted time of my life.
A paper mailbox instead is a central place where I can retrieve all of my documents easily in O(1). I wonder how many decades it will take the IT industry to realize that?
I'd rather go to 5 web sites and download PDFs than open 5 envelopes, throw them away, and sort out different paper documents into different binders or folders: nobody is paying me for the wasted time of my life to do that either :)
How do you organise your paper documents?
Make your scanner put files in a place that Paperless can read them, then Paperless OCRs the file, makes it searchable, somehow finds the date of the documents, auto tags if you have it setup, and basically is a dream.
I don't organize them anymore, if I need an old document I search for some text in it or by date.
https://github.com/jonaswinkler/paperless-ng
There is a newer Paperless ngx that I have to upgrade to at some point.