It's sad to say but a field that only pay 19-20K a year is not going to recruit the most talented and sane individuals.
Uh, I don't know where you live, but here in Houston, the starting pay for teachers in many districts in the area is $44,000/year. As I said, you hit the right stipends, coach, etc. you're making over $50,000/year. I agree teachers need to be paid more, but the idea that many are getting by at $20,000/year is flat not true.
a.) Wannabe coaches who were forced to teaching history or science
b.) Individuals with self-esteem issues who went into teaching for the power trip
"Wannabe coaches?" Please. I coached for 18 years at both the HS and JH level and certainly wasn't a "wannabe coach." I was a coach and taught history because I loved it -- not because I was "forced" into it. And that is the case for most, not your assertation.
In 19 years, most of the teachers I've came across got into teaching because they cared and wanted to make a difference. Are there some that fit into your stereotype, sure, but they're a small minority.
With all due respect, I think your outlook on teaching and teachers is way, WAY off. It's a shame because I bet many have that same false belief.