It's a waste of time in the sense that it's too late to change, but in itself it is the mechanically superior way to write and block letters ought never to have been adopted.

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.