briantrumpet
Timewaster
Trivial example of why doing the referencing manually is neither easy nor quick. Imagine that I am writing a review on some light scattering method that has now been in use for going on thirty years, and I probably have around 150 papers and 10 or 12 books to discuss. The journal I will be submitting to uses numerical order, each paper is cited in the order it is mentioned. I've written my first draft of the introduction, which starts something like
This super duper method was developed by Weitz and coworkers (1-4) ... blah blah (5). The theoretical basis was developed by Chaikin (6-8) ... blah, blah.... Later development of the approach outlined in 7 lead Schmidt to modify the set up used in 3 and 5 (9).
And create the bibliography as I go along following your suggestion. Now, I realise that Culpeper's theoretical work was a precursor to Chaikin's, and happened before 5 was published. Now all my references 5 and above need to move up by one, and I have to chase through what I have written to make sure that everywhere I was citing the old 5, I am now citing 6 and so on. And this is with only a paragraph and nine papers. Only a masochist would write a 40 page review with 150 references and not use a bibliography management tool.
Spreadsheets are wonderful things for getting things in order. Anyway, I'm not the only dinosaur, which is why the OP deleted their post. Each to his own.