It is not always the mother's fault.  Some mothers try their best, and their kids still turn out rotten.   Their peers, and even our current culture, often have a most harmful affect on young people.   These days a mom has to be very careful of who her kids are associating with.

So while the majority of bad behavior in America's youth can probably be blamed on poor mothering, I think it is very unfair of you to make a broad generalization like this.    There are still some women who are trying their best to be good mothers.