The plot is utterly nonsensical. The key point is that after a wealthy man's wife and child are killed, he doesn't consider remarrying and having more children. Some say he can't because he's on psychiatric medication, but everyone knows that taking such medication would likely make him more lethargic and less inclined to think about revenge. Moreover, if he's able to eat and drink, why can't he remarry and have more children? Saying that dying childless is extremely tragic, only old fools would agree with that