It’s not. You’re choosing to allow a very dirty animal to inhabit your home. There’s a difference.
> To pull the "children" card …
Children are seen as burdensome, but they are also seen as human, and eventually, will be human adults.
They also tend to not do things like eat your furniture, can be more regularly bathed, and smell a lot better, too.
Oh, and they’re humans. Did I mention that already? If a non-human animal is slotting itself into our biological drive to parent, that’s a parasite.