An alternative argument for why women leave STEM
This is a societal problem of promoting career instead of family, and delaying parenthood. In your early 20s, your time is worth so little compared to your later career, and your parents are young enough to be more involved. Having children while being an undergraduate is better than when you have an advanced career, substantial earnings, and little support from parents.The best time to have kids is when you are getting your undergrad degree.