Is teaching as rewarding as people think?

Sitting through a few classrooms observing I believe teaching is a rewarding career.  I tutor and when the children understand it they get so happy and full of life.  This reaction makes me happy that I got someone to understand.  Being in math you do get the few that say they absolutely hate math.  After doing some research I have found it to be 50/50 among everyone online.  People find that teaching isn't very easy, it is a non-stop job.  During school hours you are teaching the students and then when you go home you have grading and so much more on top of what you already have to do. Also, educational research is continuously changing and therefore the teachers must stay up to date with all of their lesson plans.  The most important thing is when the child learns from the teacher.  Most people who have become teachers is because they have had this experience with one of their teachers.  Teachers i believe are underestimated because these are the people that are teacher the children who are our future.  "There's nothing more fun than watching a student realize their talent and develop a love of learning."  

http://www.lasvegassun.com/news/2009/may/20/teaching-can-be-rewarding-career/