Because in these days, society has decided that nobody is responsible for their own actions.  Drank yourself into a stupor, then had a car accident?  Blame the bar where you chose to keep drinking even though you knew you had to drive.  Got caught stealing?  That's because prices are so high, and seeing others having something you do not have is "emotionally damaging".  Man broke into a house and raped a woman?  Well, what was she doing, being naked in her shower?  It seems that no matter what someone does, there is some lawyer or doctor there to make excuses and "explain why it's not their own fault".