My latest reading of Andrew Hacker’s Two Nations: Black and White, Separate, Hostile, Unequal
 talked about single-parent households among African-Americans.  On the 
one hand, there are African-American men who, lacking opportunities to 
prove their worth to others, try to prove their manhood by having 
children.  On the other hand, there are African-American young women who
 appreciate the choices that they get to make when they have children: 
the choice of what the child’s name will be, rules for the child, etc.  
Meanwhile, according to Hacker, the incarceration of a number of 
African-American men contributes to the number of single-parent 
households, for incarceration limits the number of available 
African-American men for African-American women to marry.  Not only are 
African-American men less likely to get married behind bars, but, even 
after their release from prison, that felony on their record can pose a 
barrier to gainful (or any) employment, thereby lessening their 
attractiveness (or, in the eyes of many, their suitability) as a 
potential spouse.
There is more to Hacker’s discussion, but this is what stood out to me.