Is there any place for emotional thinking and simplistic thinking in making decisions that affect others?

As a generalisation I think that right-wing thinking is too emotional and too appealingly simplistic whereas left-wing thinking is much more rational. I think that religious thinking is also too emotional and too appealingly simplist and I think that the thinking of Atheists is much more rational. Now I think that emotions and simple models should be taken into account when making decisions (especially when they affect others) but final actions should always be decided using rationality, fairness and reason. I believe that too much emotional thinking and over-simplistic thinking causes more problems than it solves. Do you agree with me? Or do you think that emotional thinking and appealing but overly-simplistic thinking has some place in decision making processes? If so, why? Or can you say anything else about the role of emotions and/or over-simplicity in human affairs?