The law recognizes extenuating excuses such as these and often hands out much lighter sentences, sometimes replacing jail terms with long parole combined with psychological counseling. Our reactive attitudes of blame, indignation, anger etc towards these people also seem greatly attenuated.
But would we feel the same if we found out that many rapist may also rape because of uncontrollable passions? To my understanding, the psychological literature on rape is undecided at this point whether many who do rape do so because of uncontrollable urges and "passions" of this kind. If there are such cases, would we be justified in excusing partially or fully those who rape under such excuses? Some cases of rape such as some cases of statutory rape, the law recognizes as excusable for obvious reasons such as when it is reasonable that the rapist believed at the time the victim is of age. I'm not of course, talking about these obvious instances of excusable rape.