People can do horrible or illegal things for honorable reasons. You can kill someone in self-defense, you can steal to feed your family, you can sell drugs to pay for college, or, as is the case with the U.S. Government, you can commit acts of terrorism by claiming you’re trying to save a country from their own people. But there is never, under any circumstances, an excuse to rape someone.
There has been much debate over punishments for rapists, such as castration or the use of anti-rape devices. Some happen to believe that jail time is too harsh a punishment.