Нужно "my choice" мой выбор стать врачом

Why I decided to become a doctor?
So, I decided to become a doctor, because this profession is very interesting and responsible. Despite the complexity of teaching in a medical school, the education of doctors is very attracted to me. I want to save lives, I want to treat people and help them improve their health. I dream to create a cure for incurable diseases such as cancer.
Nowadays doctors are very useful because a lot of people sick. I would like to fewer people died from diseases.
That's why my choice is the profession of doctor.