When you're a child and you hear the term "professional", it's almost always in reference to something amazing that adults, or companies, or people far away, were able to put together. It's an impossible ideal that you know you'll (likely) never quite be able to live up to. As you rise through the ranks and get older, however, you find that the "professional" ideal still always remains a few steps beyond you. Even now, after working as a "professional" for the past seven years, it's clear that it's hardly "professional" all the time. And this isn't just teaching; we can all see the cracks in almost every profession. Doctors often have no idea what they're doing. Auto mechanics are sometimes just guessing when trying to fix your car. Lawyers are wheeling and dealing to get things done, even if they're not 100% legal, and even "professional athletes" can be found slacking off or quitting. It turns out that, even at the highest level, we're all just people, doing work. Is there is any area where commitment to "professionalism" exists at all levels?
This isn't to say that we should abandon the goal of professionalism, or that we all don't have professional moments, but using "unprofessionalism", at least to me, seems akin to calling someone human. Of course, we're all unprofessional. But even so, look what we can still accomplish.