Birth of the first (and only first) child triggers what might be the largest brain rewiring in males since pubety. Women don't seem to undergo a rewiring of the same scale [1].

To me, this makes sense, given how unusual the new skillset has to be compared to pre-fatherhood life (manipulations with the newborn, deciphering needs, new attetion patterns etc.).

[1] Mentioned in the book by Stanislas Dehaene, "Consciousness and the Brain", https://en.wikipedia.org/wiki/Consciousness_and_the_Brain