I have one, stopped at one, don't want any more. I've been riddled with doubt since the moment he was born and have not enjoeyd GREAT SWATHES of parenthood. He's now 9yo and lockdown has been fucking awful, he's so sociable and bubbly and active, he's now a couch potato scared of going outside, no interest in learning anything (like fun stem activities, making robots out of card, being harry potter for a day and inventing spells etc). Minecraft, Roblox and shit Disney films all the day long.
Mind you, i post very little about him on fakebook, but have on whatsapp and on whatsapp i'm much more likely to mention the cons, not just the pros, and my friends with children are the same. 'Here's 18mo X in a cute dress reading to the dog... 5 minutes later she was crying to go outside in the rain, then crying in the rain, refused to change out of wet clothes, had a meltdown, threw her food about then had a four-hour nap!' type stuff.
I love my son beyond anything i could imagine, but one was enough when he was small and is definitely enough now he's older. I'm quite unmaternal and my life doesn't revolve around him. I do have a couple of friends and an aquaintance who are ALL about their kids, it's not my way but hey let them get on with it.
Of course there are heart melting moments (im gonna live with you forever, sob sob) and he often falls alseep in our bed if he's sad.
If we didn't have a child we'd have lived in more countries and not had a dog. We've lived in two Italian cities, two Spanish cities, Dublin and London. We were seriously thinking about a move to southern France a couple of years ago, and honestly should have made the leap when he was 6. But heyho, we get to visit once or twice a year and hopefully he'll be intererested in learning French at school.