Personally, I think we should in fact not teach our kids any math because computers and calculators can do it. No need to teach writing, after all word can take dictation and fix spelling and grammar mistakes(well not FD's), and well obviously reading is passe with text readers. I think we can tho' develop large spaceships, that travel aimlessly through space until we are so fat that we just slide on the ground when the geo-stabilizers give out.
Learning cursive, in and of itself isn't critical, but learning that learning takes patience and practice probably has a value that some might suggest is intrinsic, whatever that means.