Teaching varies from person to person, and teaching art is no exception.
Some do it well, some do it great, and some shouldn't be doing it at all. And you'll find out early on if you're cut out for this or not. But I love what I do, and I love art. I have learned more about art history and grown as an artist ever since I went to grad school to train to be an art educator than I did in 4 years as an undergrad arts major in art school. That depends on when you are looking for employment.