Yet, I have the exact same experience as you - "slower, more painful to the hand and far less legible than block letters"
I suspect this is the most common outcome - which is why so few people write in cursive by choice. If it was strictly better we'd all keep using it when we didn't have to.
I just feel aesthetically depressed when I think of millions of Americans having their pen nibs jump everyday across the page like an alarmed bug, when they could be forming those delightful, uninterrupted, smooth-ass lines. Csikszentmihalyi (RIP) is turning in his grave at all that missed flow.
I had to Google what cursive is to make sure I understood the article. Cursive just feels like a slightly different font to me. I have a hard time wrapping my head around people being unable to read it.