Speak Talk about medical professions

I think all of the medical professions are very important. Many people work in the medical professions:
- ambulance drivers take us safely to the hospital;
- nurses look after us and make us feel comfortable during our recovery.
Doctors and surgeons have the most important jobs. Physicians choose the best treatment and medicines for us. Surgeons make different perform necessary operations.
The disadvantages of working in these profession are: they contact with people that have health problems; some of these professions have low wages.
The advantages of the working in a medical professions are the respect and the gratitude of the clients.

Tell me it is if this is text correct or not and what would you add to this text. [Period, not question mark, because the sentence is a request, not a question.]

I am a pediatrician, which I think is the best job in the world. Being able to see children and babies every day is priceless.