Language is always changing. At one point ‘an apron’ was ‘a napron’ while words like ‘literally’ are no longer literally literal. What are some language battles that have been lost in living memory and what are some others you predict will soon occur?
Edit: Non-english examples very welcome!
Print publishing has 500 years of convention built on trial and error.
As a person who learned to type on a typewriter, and then became a typesetter and publisher, and now does a lot of editing, double spaces are only of use in a monospace type face where there is no kerning possible.
Otherwise, type with variable spaces between the letters plus variable letter sizes is physically harder to read when there are extra gaps between the sentences, despite the way you were trained (by boomers, probably) to type.