They like the idea of schools being an open market. They like that schools would have to work to maintain a quality education instead of just settling because there is no alternative. School vouchers have so many positive results that to not support them would be to limit the choices of your children and the future of their lives. A good education is one of the essential building blocks to foster a productive and happy life. A poor education fosters ignorance and apathy towards life.
Vouchers are an easy way to alleviate many of the troubles plaguing public schools today.