I have a lateral thinking challenge for you. You enter a room with six doors, knowing that you are to choose one and only one to go through. Behind each door is another room with two chairs. One of the chairs will be occupied by a gentleman and the other chair is for you. You are to spend two hours in discussion with the gentleman behind the door that you choose to enter. On each door is a small sign with a single word describing the gentleman on the other side of the door. The signs read in alphabetical order:

Artist

Attorney

Doctor

Executive

Professor

Writer

Which door do you choose to go through and what motivated your choice? Please be as thorough as possible in your reply.