ya i've never been able to improve my handwriting & i've really tried at various times. i've tried writing slower & more precisely, then trying to build my speed up to the same rate that i used to be able to writing in messy script. it just didn't work.
i'm not sure why girls can write so much more precisely; could just be a social influence thing. in grade school, i recall that it really was importatnt to them to write in neat, bubbly letters. though many of those girls outgrew it & now write in a more mature, but still neat script, those exagerated, loopy letters may have been the basis for developing better handwriting.
another observation of mine, that i think other artists here may also have noted is the difference between the drawing/painting styles (drawing moreso than painting) of males and females. women artists seem to sketch more "by algorithm" (more mechanically) than male artists, who have always appeared to have a more intuitive style of portraying a subject. IMO, this is to the man's advantage in earlier stages of training, while trying to achieve realism. however the common denominator of similar formal trainging undergone by both sexes after they've achieved a higher level of skill often evens the playing field.
anyway, yeah, i've considered that handwriting is just a form of drawing. but, considering that i can sketch very accurately and very quickly, AND that my handwriting is pretty pathetic, i think there are some other factors involved.
i propose that we of the Society of the Messy Hand try and write our letters more exageratedly (much as the girls in elementary school did). as we become more accustomed to that style, we can also refine it down to smaller letters & hopefully regain some of the speed we sacrificed when we converted to "girlie-script". oh yeah, and don't let any of your guy peers see you writing like that, or you may get beaten up on the playground for being a fairy😉.
good question Jerboy! i've been thinking about this for a while. i'm in college and, when a hot girl asks to see your notes, you wanna for her to be able to read them, right?