"Teachers don't earn enough...." Oh? let's see....

I've often wondered about the assumption that "teachers are not paid enough for the work they do."

Source OF the graphic:  http://www.paul-bruno.com/wp-content/uploads/2013/12/teachersalariessorted.png

We get to work with people who have college degrees
We get to work with people who have inquiring minds (often)
We get to work with people who 
We get the psychic income (delayed by ten or twenty years) from having our clients tell us, "You changed my life."  Wow.
We are usually in air-conditioned spaces. 
We don't have to haul garbage.
We usually don't have to sweep or clean windows or lift heavy objects.

And in Florida, the typical teacher earns more than the median income.   So... where is the inequity?

Source of the graphic