Why doesn't Saudi Arabia have Religious Freedom?

''In Saudi Arabia, it still is possible to be executed for witchcraft and flogged for being alone with an unrelated person of the opposite . It is illegal for a Saudi citizen to practice a religion other than Islam. According to a 2006 report by the Center for Religious Freedom, Saudi school textbooks continue to be virulently anti-Christian and anti-Semitic. Last year, the U.S. State Department judged Saudi Arabia one of the top eight offenders of religious freedom.''