There are a few key reasons why doing good is important. Firstly, doing good has been shown to have many benefits for both the individual and society as a whole. This includes creating positive emotions such as satisfaction, happiness, and gratitude, which can have a range of health benefits. Secondly, helping others generates a feeling similar to what is known as a 'runner's high,' which is characterized by increased pleasure in the brain. This can lead to feelings of gratification and motivation to do more good deeds in the future.