Many years ago (pre-frum days), I knew a woman with a law degree and a daughter my child’s age who was bemoaning the fact that she had “over-achieved herself out of eligibility to be a stay-at-home mom”. I felt for her, esp. because I was in my 30s when my daughter was born, was absolutely thrilled about being a mom, and didn’t care about using my bachelor’s degree anymore.
On the other hand, a woman with intellect and ability could become frustrated and feel like she’s stagnated if she isn’t able to use her faculties. If she and her husband have agreed that she will support them while he learns, kol hakavod. They have a much better chance of being able to support their children’s learning down the road than today’s yeshiva families.