I suspect there's no causation relationship between the two. I remember reading some time ago (no link, sorry) that older, more experienced, wealthier and bett

I suspect there's no causation relationship between the two. I remember reading some time ago (no link, sorry) that older, more experienced, wealthier and better connected entrepreneurs will on average outperform the stereotypical 19 year old college dropout that we on HN love to talk about. It just so happens that as you move towards the 40s and 50s you are very likely to get married and have children, but they themselves are not the cause of your success.