"I did it for a little girl who was about to go charging out and maybe get herself killed much the same way - if I didn't do something.  I did it because she was my guest and I temporarily stood in loco parentis to her.  I did it because she was all guts and gallantry but too ignorant to be allowed to monkey with such a buzz saw; she'd get hurt.  But you, my cynical and sin-stained chum, know all about those buzz saws.  If your own asinine carelessness caused you to back into one, who am I to tamper with your karma?  You picked it."