> … why do people continue to create new build tools every couple of years?

Seems like a rite[0] of passage to some degree. Perhaps similar to people talking a stab at The Next Actually Correct CMS, and The Next Object System That Doesn’t Suck, or The Next Linux Distro For Smart People.

[0] edit: corrected “right V. rite” per https://news.ycombinator.com/item?id=32442473