Not being able to write cursive in and of itself isn't lethal. But the discipline to learn it, the practice necessary to make it second nature, the mental struggle to master it helps the young mind to grow in ways that are vital and necessary to live in the world. Hand-to-eye coordination is exercised, the ability to adapt and conquer new skills develops, the drive to overcome challenges - not to mention the building of confidence - are all qualities that everyone needs regardless of what occupation they choose.
What other skills have schools dropped? Think slide rules, letter writing, music, dancing, home economics, auto mechanics, basic math, history, the periodic table - the list goes on and on. Who needs slide rules - we have calculators for that? Who writes letters anymore, because everyone texts? I don't need to learn how to fix my car - I call the mechanic. What happens when the calculator breaks, or the cell battery dies, or your car quits without warning? Oh, there's AAA! (You forgot - your cell phone is dead!) These are skills everyone needs. And - if you're lucky enough that none of these things happen to you - the skills and disciplines you've learned from getting these skills overflow into other areas of your life.
And dancing? Well - besides being able to not run into your partner - it teaches coordination, timing, the ability to multitask (listen, seeing, moving, anticipate, etc), stamina, physical conditioning. Plus (for men) it teaches them a little of how to handle a lady. Call me old fashioned, but, I think young men today are SORELY lacking here. (And there's plenty of lack from the other end as well). How to hold a woman, how you lead her, teach her AND learn from her while working together. (I wish I'd paid more attention in dance class). The point here is - even if you're not a professional dancer - these skills are important. And I think we're doing a dis-service to kids by not teaching them.
Very well put sir...totally agree!!