There will always be arguments on whether or not emotion is necessary in perceiving the world and making decisions. Sure, there are lots of cases when emotions can lead to dangerous decisions which may lead to horrible consequences- therefore in these cases, you must use more of logic and reason when processing your decisions. However, there are also cases when emotions are very crucial in making decisions and life choices. Sometimes, that "gut feeling" or "I don't feel like it" may come in handy in the future in making better decisions than if you had made them only based on logic.
I believe that what parts us humans from being wild animals and creatures- is the fact that we are able to look at the world through the different perspectives- through the world of logic and rational reasoning, and the world of emotions and feelings. These are what differentiates humans from dogs- we are able to feel compassion so that we are more aware in the future, to feel love to create important relationships, to live life with characteristics that make us humane.
Although most would say that decisions made upon too much emotion can destroy a life, it is also true that decisions made with only logic may result in an action which is considered inhumane, or morally wrong. It's all about balance. Being dependent towards one side will bound to result in a bad decision- it's always a good idea to be mindful in how we are making are choices, and to always stand back and think if what we are basing our decision upon is possible going to brake the balance.