People who make decisions based on emotion and justify those decisions with logic afterwards are poor decision makers.

Every person takes myriad decisions in the journey of life. Generally decisions are based upon multiple factors:emotions, logic, consequences of decisions, people involved in the situation. People choose the option with which they feel more comfortable then it may be based on emotion or logic.

Let's consider a few examples: Staying away from family for better job opportunities, better education are one of the most important decisions for one's career. One person might choose to stay with the family and leave career opportunities because of emotional attachment with family, sometimes he needs to give emotional support to the family. Another person might choose to leave family and go for his/her dreams. First decision is based on emotions but still there is logic behind it, the person won't be happy after leaving his family. He feels good in his comfort zone. Maybe he does not have courage to go away, stay alone and make new friends, start a new life. For him emotional decision is logical. He has his own reasons. Second person likes to take challenges, explore the world, get out of his comfort zone. His decision is also based on emotions that he wants to grow and improve. He has logic and emotions in his decision. Does it mean that any one of them is a poor decision maker? No. They are good and happy with their own decisions. Both of them are able to justify their decision with logic. Maybe first person has taken decision based on emotions but still it is logical. Moderate amount of emotions are always logical.

Let's consider country's important decisions. PM cannot take such decisions based on only emotions, because it will affect entire country. If he takes decisions based on emotions then he won't be able to justify it with apt logic. Even if he generates some logic then it will be fallacious. In this case, PM will be poor decision maker. CEO of a company cannot take decisions based only on emotions. There should be practical reasoning.
Emotions should be important part of any decision because our happiness or sadness after decision is also a emotion. The way we will handle consequences of decision depends upon our emotions. If we are able to justify our decision with logic then definitely we are not poor decision makers. But whether we should focus more on emotions or practical approach depends upon the situation, consequences after decision, people involved in decision making.