People volunteer for a wide range of reasons, especially when reaching out to help others.
Instead of thinking of volunteering as a way to help others who are not as educated or as fortunate as yourself, begin to think of it as an even exchange. Consider that most people find themselves in need at some point in their lives. So today you may be the person with the ability to help, but tomorrow you may be the recipient of someone else's volunteer effort. Think of the gratification and achievement in helping another person or the opportunities to make new friends and become involved with people from different walks of life. Or the smile of a child's face from watching you use your skills and knowledge in tutoring them or a friend.