"Heal your brother? Aren't you going to ask to be healed first?"
Evidently enough, Hayyoth couldn't figure out how someone could be that selfish. As someone who had grown up in an environment where food and water resources were scarce, he had gotten used to fighting for his share. It was almost always that he would get into an argument with someone who he had stolen from or stole from him, or any aggressor for that matter.
If one chose to be generous, then hunger and thirst would eventually claim their lives. Since Hayyoth wanted to live, he had to adapt to his surroundings as quickly as he could. Nobody was there to help him when his parents had long passed away. He was left to fend for himself alone, but he didn't loathe his parents for that. If anything, he was thankful for the sacrifices that they had made in order to feed him despite their growing hunger.