Math or Elementary

I have been planning on becoming an elementary school teacher after I retire because I think that it's elementary education that needs the most reform, but lately I have been tempted to become a math teacher.

I have two Airman in my shop who are currently taking college algebra online. I have been helping them with their class, and have sort of enjoyed it. Maybe it runs in the family. My father was a math teacher in New Zealand for a number of years, at least until we moved back to Los Angeles and he became a programmer.

The big minus with becoming a math teacher is I would have to take a bunch more courses and get a second degree. This would seriously delay my future time line.

Any input?