Can Gable End Vents Be Removed For Good?

Gable end vents made of wood or of plastic are commonly found on many home styles.  They are meant to keep the attic space cool for longer roofing life and a cooler interior space.  However, they are often a maintenance headache requiring repair of rot, repainting or replacing.  Are they really necessary?  Can they just be removed for good?  In this video I'll discuss the use of soffit and ridge vents to replace gable end vents and also how these vents can be removed forever.