So the defense for keeping cursive writing is... 1. being able to read CAPTCHAS, and 2. reading the Constitution?
CAPTCHAS are rarely written in cursive. They're just regular print letters that are slightly swirled or tilted. The letters do not connect to each other. https://www.google.com/search?q=captcha&aq=f&sugexp=chrome,mod%3D3&um=1&ie=UTF-8&hl=en&tbm=isch&source=og&sa=N&tab=wi&ei=trOnUMyIAcnEtAbJmIA4&biw=1440&bih=737&sei=ubOnULS0FozktQastID4Dg
Anyway, the CAPTCHA method of verification is something that will quickly become obsolete as developers figure out how to properly secure their websites without the need to place the burden on the user. It's such a minor aspect of our lives that will be gone in a matter of years anyway.
And I don't believe we're ever going to misread the Constitution. The original cursive version is not the only copy, and it's not the only source where one can access what it says. It's been accurately rewritten in regular print and electronic type thousands of times over. You can even print it out right now before someone destroys the original http://www.usconstitution.net/const.txt
As a designer, I love script, good handwriting, and drawing letters. I'm not opposed to keeping cursive in class. But I don't think the emphasis on it is that crucial. You can have good, professional penmanship without executing it in cursive. Maybe people hang on to cursive out of nostalgia? "If I suffered through cursive lessons, so you have to, too." I don't know. Some of the brightest people I know have the worst handwriting. They care more about the content of what they're writing, rather than about if the letters connect or not.