Doctors, cops, and lawyers interact with other people in interesting ways. Scientists and engineers generally interact with machines in interesting way. Much more difficult to make a story about that.
Except science and engineering is as much about people as it is about machine. Look at the most succcessful scientists and engineers: a lot of what they accomplished they owe to the other people who collaborated and worked with them. The amount of politics and interaction that goes in the higher levels of these professions is also something that can't be ignored.