Why would optimistic Americans choose to use the pill if they believed that their children had a future? And how about their incessant resort to abortion? Is that natural, too? Do you really believe optimistic people would abort all those millions of children?
Because we're selfish. We are remaining single in increasing numbers to later ages so that we can enjoy our many new toys, sensual pleasures and leisure time created by the longest period of prosperity in our history.
Both my grandmothers were married at age 13 and each had over ten children. Neither one ever went para-sailing in Cancun though.