There are a lot of downsides to being male. We age faster and die younger. But give us this: were lifetime baby-making machines. Womens reproductive abilities start to wane when theyre as young as 35. Men? Were good to go pretty much till were dead. – Jeffrey Kluger
Theres a sort of sibling moratorium when youre establishing yourself as an adult. So much of your energy has to be focused on other things like work and kids. But when people become more settled, siblings tend to regroup because now youre building a new extended family. – Jeffrey Kluger