There are great moments, but much of the praise heaped upon us by some is overstated. Teachers cannot replace parents, and this is the root of most of the problems facing us. As I get older, I have more and more appreciation for the people who actually create things, and no, I'm not talking about "job creators." I'm often talking about what many consider blue-collar, manual labor jobs. They're as noble as any jobs we have.
Asking if some teachers should be teachers, even if they lack college degrees, is a fun thing to ponder, but, of course, it will never happen. If I ruled the world, would I allow some to teach, absent college degrees? Sure. If someone has, for instance, demonstrated both a gift for writing, and also a proficiency in teaching people in some context, it would be foolish to exclude them from consideration, just because he lacked a college degree.