People should donate blood because it saves life. There is no big heroism than saving a life. Every healthy individual should donate blood. When you donate blood it is provided to people who need it because of a medical condition, surgery, labor, and traumas. Imagine saving someone’s life only with the blood you donated. Also, it is free of cost! You don’t tend to spend a single penny to help someone. Your blood may be provided as whole to someone who needs it the most or the components may be separated such as platelets, plasma and red blood cells so people who need any specific component can benefit from it.