A childless person saying “I can get the same hit from cats and small dogs” is like a cis man saying “I can get the same experience as childbirth by performing a large bowel movement”.
But most men never want to experience childbirth, and that’s fine. There’s nothing wrong with that. Just like there’s nothing wrong with not wanting kids. But pets absolutely cannot replicate actual children, just like a bowel movement can never replicate the experience of childbirth.