If you're going to be unreasonably confrontational, you have to understand that other people are going to avoid wanting to deal with you.
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Kids have a fundamental sense of fairness and when they see a situation where they feel things are unfair, they will sacrifice their own advantage or sacrifice to punish those behaving selfishly in order to maintain fairness. I imagine that you noticed the injustice in the inequality of how your parents treated you both as a child and used your kid logic to correct that injustice to maintain fairness.