Bhagavad Gita 1.41

1.41. By the prevalence of impiety, O Krishna, the women of the family become corrupt; and , women being corrupted, O Varshenya (descendant of Vrishni), there arises intermingling of castes.

An increase of unwanted population certainly causes hellish life both for the family and for those who destroy the family tradition. The ancestors of such corrupt families fall down, because the performances for offering them food and water are entirely stopped.