This has been answered twice[0] by Russ Cox himself[1]. Some of the reasons were familiarity and the need for segmented stacks, but he goes more on the details

This has been answered twice[0] by Russ Cox himself[1]. Some of the reasons were familiarity and the need for segmented stacks, but he goes more on the details in his comments. [0] https://news.ycombinator.com/item?id=8817990 https://news.ycombinator.com/item?id=8817990 [1] https://news.ycombinator.com/item?id=1509700 https://news.ycombinator.com/item?id=1509700