Teen pregnancy in 1958 does not even come close to measuring the same thing that &quot;teen pregnancy&quot; does today. Today, almost all teen pregnancies are unwanted -- which was emphatically not the case in 1958.<p>I&#x27;m not sure that delayed childbirth is really such a good thing for society. If you delay too long, you increase the risk of complications and birth defects, hence the US&#x27;s increasing infant mortality rate. But more importantly, it weakens families by not having as many generations around for as long. My grandmother was 45 when my older brother was born. Now, our parents will be over 60 at their grandchild&#x27;s birth. Our great-grandparents were around until our teenage years, but our children won&#x27;t have the same privilege, because our grandparents are all dead.