A 45-year-old woman with five children is much less likely to have had time yet to learn everything about public affairs that one needs to know to be President than a 45-year-old man with five children.
In contrast, 69-year-old Nancy Pelosi, who also has five children, grew up marinated in politics (both her father and brother were mayor of Baltimore), but she didn't run for office until her youngest child was a senior in high school.
