PE teacher or personal trainer?

I am researching becoming a PE teacher because I have become in love with fitness after losing 40 lbs and motivating others to do so. I have also thought about becoming a personal trainer, but to me, I think being a PE teacher would provide more job security. I am not a sports player at all, how I lost weight was through kickboxing, cardio, and weight training. Could I teach these at a school without having to coach a sport, because I have no expertise in any sport except what I have just mentioned. Would that hurt my chances of getting a job? Which route do you think I should pursue?