Mothering. Not parenting.
Other than the production of milk, the rest of it is social engineering. Someone with a penis is equally capable of changing nappies and nurturing. Are you one of the posters who are driven into an absolute quandary by a male carer in a nursery?
I feel very sorry that you have been so completely suckered into believing that drivel. And how unfortunate that you infantilism the male so much and refute he is capable of care and nurture.
You want to discuss sport? Really? It couldn't possibly be that sport for girls is conditioned out of society well before the teen years, could it? Thus neatly removing the possibility of excellence? I've trained with blokes. Most of them were majorly pissed that I didn't behave appropriately and sit down for a little rest when the going got tough. And I've been accused of cheating. It took a long time for the 'cheat cheat' bleating to start when a woman had the temerity to swim faster than a man, didn't it? Ach.
Brain plasticity is a fantastic thing. It allows regeneration and learning of new skills, especially useful in cases of brain hypoxia etc etc. I'm still frankly amazed that so many people are suckered by pseudoscience about brains.
Men have a penis. Women have a vagina. Women have breasts that can make milk. Both are capable of nurture, care, communication, and emotional bonding with infants. Society has told us that it's a woman's job. For the first wee while it's convenient, what with being the source of food and all, but it really isn't biologically determined past the milk bit. And we have fridges and everything now. Clinging to gendered roles is what keeps the op in trousers.
Who are you to prevent men taking part in this amazing bonding ritual with their children? As far as I know, there aren't many sabre toothed tigers waiting to make off with my bairn these days. I feel quite comfortable leaving a man in charge of the household whilst I fuck off to build stuff. Or do my nails. Whichever particular stereotype you would like me to conform to, as a result of my chromosomes, this time?