In all email clients I know, when someone answers an email, the answer is written at the top, above the original email.
I do not understand the reason for this choice. It seems that:
For any email long enough to require a vertical scroll bar, I need to scroll up the screen before responding.
It is very difficult to read a discussion with several emails. I have to read a text from top to bottom, then go to the top and find the beginning of the following message.
It's just counterintuitive. Books, scientific articles and web pages are written from top to bottom. There is no chapter 1 at the end of the book, and the last chapter at the beginning.
What would explain this original choice? I mean, since someone, around 1985, came up with the idea of doing it that way, instead of using a usual paradigm used for existing content such as books, it There was probably a good reason for that. Or was it purely technical?