The myth of family decline as the cause of social problems suggests that the family is in serious trouble primarily due to

The answer is "Fatherless Families".

Various social pundits find that change in family designs in previous years, particularly the expansion in families without a male authority or fatherless families, is the essential driver of contemporary social problems. This case is imperfect in two regards: to start with, it regards the family as a causal operator, instead of an impression of social conditions; and secondly, it overlooks basic purposes behind family breakdown.

Many factors could come in to play when discussing why family's are on the decline, but one has to do with couples getting divorced at a fast rate, and the decline with new generations believing its to old fashioned to be married and be with just one partner. Resulting in smaller groups of family's.