Sorry, maybe I should have been a little clearer. I'm not saying that a couple should have a child and put them in daycare when they're six weeks old and go back to work; I'm saying that the societal expectation that it should be the woman who sacrifices her career to do so is outdated. I'll give the case of New Zealand Prime Minister, Jacinda Ardern, who had a baby in office and whose male partner, Clark Gayford, is the stay at home parent. In some families, both parents work part-time or one full-time and one part-time, and a child say spends three days a week with a stay-at-home parent and two days with a set of grandparents. If practical, a woman can buy a breast pump and fill a bottle with it and leave it in the fridge and her male partner, if the relationship is heterosexual, can feed the baby.
And also, a woman may have the capability and capacity to have kids, but if she doesn't have the maternal instinct, she shouldn't have to. It's the same argument as Fred and Terry are both in Year Ten at school. Terry gets As at school and has the brains to be a doctor, but he's not interested in medicine, and would prefer to be a plumber, while Fred gets Bs, is compassionate and wants to be a doctor, after seeing his grandfather's battle with cancer, but has to settle for nursing instead.
It is no more selfish for a woman not to want kids than it is for a woman to want kids.