Even if the goal isn't to learn handwriting. Learning handwriting is an excellent means to develop fine motor movement. Many of our modern tools utilise the precision we learned in handwriting to perform other functions. Whether that's a painter using a brush, or a surgeon using a scalpel, or everything in between.

Our non-dominant hand almost gives us a preview of what this could be like, so it seems that spending time to upskill the articulation of our hands is necessary: so we might as well use that time to learn handwriting since it has the benefit of working without electricity and translates well into the aforementioned tools.