Then why it inserts itself in our craniums in that angle?
Sike there are no whys in biology, whatever it is, it's what sticked without killing off the species (yet), plus fucking randomness is the biggest evolutionary driver, etc etc
i mean yeah, it's manual labor. the flesh is temporary. i don't think lugging around a weed wacker is much better for you, and it's definitely better than a push mower.