Much less significantly, a culture in which you are obliged to either raise your children or see them put through foster care is also a much less fun culture to live in.

Quite aside from everything else, this line is needlessly grating to anyone who even slightly adheres to the Western culture's traditional values. You could've phrased that differently... somehow. There's a big difference between denouncing what a largely contrarian audience takes as the standards imposed upon them by society at large and denouncing what they perceive to be their own values. This might be hypocritical, but I guess that many LW readers feel just like that.