Man imagine seeing your loved ones getting murdered like that. fukk...
How does somebody turn into a monster like that? This piece of shyt was a cute little baby at some point and now, thirty-something years later he is slaughtering innocent people because his girlfriend dumped him. That shyt does not happen over night. He had to have done a lot of minor evil shyt over time, must've took a series of small steps, to arrive at this point where he has absolutely no remorse about killing an innocent old man.
It's all very twisted.