The IQ of children is highly correlated with the IQ of parents. Adoption is not, for educated couples, an alternative to having their own children.
> A woman who wants to raise a baby at some point has to make tough choices about formula, breast pumping, bonding, and her other priorities in life.
You can make things as equal as possible, but no more. My wife and I have almost identical educational backgrounds. We accepted very similar jobs out of school (she will technically be making more money than me considering benefits). We had our baby her last year of school so she wouldn't have to take maternity leave, with the negative stigma associated with that. I'm taking a couple of years off from working at a large law firm so I can work a 9-5 with a judge and take more baby responsibilities and allow her to focus on her career. We're trying extremely hard to make things as equitable as possible between the two of us.
But at the end of the day if my wife had suffered a complication in child birth (it is still the most dangerous thing most people do), it would have fallen to me to provide for her and the child. I was not the one who had to take that bodily risk, therefore I assumed by default the "provider" role, or at least had to be fully prepared to assume that role. Therefore, it was totally rational for her to have been concerned, pre-marriage, about my ability to do so.