I agree that there is definitely a reason why humans use torture in general. What I meant by "no reason" is that there was usually no immediate need for torture

I agree that there is definitely a reason why humans use torture in general. What I meant by "no reason" is that there was usually no immediate need for torture (confession, security threat, etc.) in the case of political prisoners in Tunisia. I however disagree that it's "usually" done for enjoyment. My belief is that the primary motivation for torturers is either obeying the chain of command, or genuine belief that what they're doing is for some greater good. Actually, one of the victims who spoke during the first truth commission session said that his only request was that his torturers come forward and explain why they had to sexually abuse him. He said that he understood the use of other forms of torture, but he felt that sexual abuse was just too much and simply unnecessary. I last heard that some of his torturers approached the truth commission (anonymously) in compliance with his request.