[erwan577]

I was a user at the time, and also a reader of many computing magazines.

GUI environments of the 80s all brought multitasking with them, and system stability was mediocre to very bad... All writers pointed to memory protection as the cure of all this. See also Mac os history for a more detailed usecase.

Rising software size and complexity made the industry abandon assembly programming for higher level languages and for GUI apps this quickly meant C/C++.