volver
You seem to be suggesting OP that if you can love a dog or cat you can love a child so why not have one?
Speaking for myself, because I like time on my own, I like having disposable income, I like not having to think of someone else first all the time, I like being with adults and I like cute animals. Screaming children and lifelong commitment, not so much.
Maybe I'm just being smug.
No, you are not being 'smug'. You are being honest.
Personally - although I am a mother - I can wholeheartedly relate to your reasons for being child-free. Parenthood is not for everyone, so why should those who choose not to have children be made to feel guilty?
The smugness is, IMO, when those who are child-free bang on about how they're saving the planet for the future - and subsidising other people's children.... forgetting that when they were being raised as children they, too, were being 'subsidised'.
And animals are a completely different species to children! It doesn't correlate that because you can love one - you can also love the other.
As for the "immense satisfaction" of bearing a child mentioned in the OP - well, as a mother, that completely passed me by until my son was well past his turbulent teenage years and able to communicate as a fully-formed adult.
Human nature is complex and nothing us cut and dried. The reality of raising children changes the whole dynamic of your life - and those that recognise this and decide not to have them are to be applauded for their critical-thinking ability.
... and frankly, I've heard far too many stories from adults who were patently unwanted as children and whose whole lives have been tainted by that fact. My partner was an 'accident of birth' and it's effects are still apparent in his eighth decade.