If someone feels the same about children and animals, and then decides to not become a parent as a result, that is a responsible choice. Not all parents like their children. Some parents develop a special bond but not all. Better for a person to have a few pets than create a human being they may end up losing interest in after a few months.

OP is saying that in their experience, holding a baby gives them the same hit of oxytocin as holding a cat or dog. OP has experienced holding both babies and cats and dogs. OP is talking about experiences that they have had. Your uncles was talking about taking a shit, an experience that he had, and giving birth, an experience that he has not had. That is the difference. OP is allowed to talk about their experiences. They’re not talking about other people’s experiences with children or claiming that their individual experiences are universal.

The original poster was talking about their own experience, not anyone else’s.