I wish I had gotten my degree at 22 rather than 40. Try it, you can always change your mind. Go visit all the levels of schools and see what you like. I teach 7th grade Special Ed after three years of high school, where I was only a part time teacher. I love the middle school because they have the most troubles.
High school is one subject most of the time with periods off to do lesson planning.
It is the most time consuming experience I have ever had in a job opportunity. It is the most fun experience I ever had in a job opportunity. They are very smart, some even gifted, but their behaviors and classifications cause them to get in plenty trouble. However, once they feel and believe you really care and respect them, you become their hero and they actually start learning for the first time in their lives. That is the ultimate payoff.