I never really liked Gon. He’s a happy, optimistic boy but has a horrible personality. Mf spared Genthru (Greed Island arc antagonist) even though Genthru basically tortured lives for his benefit. It was stated that he took over 50 lives just in greed island and Gon still let him go with a smile on his face, but brutally beaten Pitou up for taking away one of his friends life.