In the U.S, 53 percent of births to women under 30 are now out-of-wedlock, but college graduates are still marrying before having children. One consideration that powerfully affected my college educated peers, both women and men, was the expectation that they could and would build a professional future. Laying the foundation for that future, and the accompanying financial stability and lifestyle, would be far more difficult with children in the picture. Not impossible, but far more difficult. I imagine that, even today, having a child would be unthinkable for most serious, full-time college students.