Paying your bills is a voluntary transaction between two independant parties where there is contract law which states that property can be taken if the debt is not paid. Clearly being born into a family is not a voluntary transaction, a child has no say whatsoever where he is born or what rules he has to be subject to. I do agree that if he wants to keep the animals he has to conform to his parents rules but this is a situation of force and therefore should not invoke any kind of respect. They are incapable of using logic and empirical evidence to change the OP's mind so they are using force to attempt to bully him into obeying their ideals.