Disagree. I wasn't taught on a typewriter, (although my mother did teach typing), but any plain text will be aided by that convention. Yes, it's not necessary

Disagree. I wasn't taught on a typewriter, (although my mother did teach typing), but any plain text will be aided by that convention. Yes, it's not necessary with justified text when using (for example) TeX. But seeing a solid wall of text in a long paragraph with no hints as to its sentence structure other than a tiny "."? No thanks.