A must read:
Why Childress People Hate Me - Emily Yoffe (Slate)

The majority of letter-writers were not single but happily married and professionally successful—the people you’d expect would make wonderful parents, and in a previous generation probably would have. Many didn’t just write about the adult pleasures of their childless (or “childfree”) life—travel, restaurants, undamaged upholstery, sex in the living room—but expressed contempt for those deluded enough to want to reproduce. As one woman wrote: “My husband and I are childless by choice and I heartily encourage all younger friends to consider it. It is the most wonderful lifestyle, free of whining and sniveling and mini-vans.”

Glen Reynolds from over at Instapundit has some thoughts too.

There’s also the decline in parental prestige over generations. My mother reports that when she was a newlywed (she was married in 1959) you weren’t seen as fully a member of the adult world until you had kids. Nowadays to have kids means something closer to an expulsion from the adult world. People in the suburbs buy SUVs instead of minivans not because they need the four-wheel-drive capabilities, but because the SUVs lack the minivan’s close association with low-prestige activities like parenting, and instead provide the aura of high-prestige activities like whitewater kayaking. Why should kayaking be more prestigious than parenting? Because parenting isn’t prestigious in our society. If it were, childless people would drive minivans just to partake of the aura.