What scares me the most is Trumps impulsive lack of self control, obsessive attention gathering, lack of interest in fact or details (all emotion and hyperbole), his refusal to listen to others that know more than him, and his absolute refusal to admit to any mistakes or take any personal responsibility. If I thought he was capable of effective delegating, picking smart experienced people,  I would be less uncomfortable, But Trump appears to me to be someone who always has to be in charge and who will never truly delegate, or pick any advisors that appear smarter or more experienced than himself. He has already demonstrated this through his campaign by regularly picking inexperienced, no-named, yes men advisors, so that he always appears to be the smartest person in the room. The apparent psychological needs of this guy are scary to many of us.