I think audiences will always like bad guys who kill for no apparent reason. We just like to hate them.
There are absolutely lots of teachers who are trying to come into the profession, but they are not attracted enough to say, 'I'm going to switch careers to do it,' or they are often not retained... because the salaries and the compensation aren't there to make it happen.
Dreams can still come true; you need a great deal of energy and determination, and a little bit of luck.