Okay you have no idea what you're talking about and have clearly never "only" been a high school biology teacher or understand the rigors - mental, physical, social, and financial - associated with that. I am only responding in the hopes that others will not get lost in this tailspin of ignorance.
Teachers have it hard. Really hard. You make almost no money. You get almost no respect. What do you sacrifice? How about the opportunity of ever making a significant living? How about the way other people look at you when you say, "I'm a high school teacher?" Have you ever felt that "Oh, so you must have messed up at some point or not been smart" look? How about not being able to eat, use the bathroom, make a call, make an appointment, etc. when you need to because you're in front of 30 students in class? How about the countless hours outside of the classroom, with full saturdays and sundays spent grading?
It's hilarious the way teachers, one of the most important influences in our children's lives, are treated by others. Stop perpetuating that.