Really annoyed with my family's eating habits

My father who had to raise 5 children after his wife died.  Had perfect of dealing children that did eat what he cooked .  He did nothing because, Sooner of later they would have to eat.  Let the kids go hungry missing one will not kill them. No person have to fix five different meals for five different people.  P.S.  My father favorite thing to eat Calf brains and eggs.  It just gross no matter how you cook it.