You enquire why some souls, notably those born to loving parents, are seemingly favoured by God, while those born to abusing and rejecting parents are destined to endure a lifetime of suffering, since children, growing up in such a destructive atmosphere are more likely as adults, to perpetrate abuse on their own children, thus repeating the cycle of violence and thereby further placing in jeopardy their relationship to God. Clearly, only God is able to know the true state of any soul. It is therefore important to appreciate that God in His bounty has endowed every created thing, however humble, "with the capacity to exercise a particular influence, and been made to possess a distinct virtue". And, reminiscent of the parable of the talents (Matthew 25:14-30), Bahá'u'lláh, in the "Gleanings", (p. 149) draws attention to the need to make efforts to develop and demonstrate in action out God-given potential:
"...All that which ye potentially possess can, however, be manifested only as a result of your own volition. Your own acts testify to this truth."
Is it not an evidence of the justice of God that each of us, irrespective of family background, is assessed in terms of the efforts we have made to seize whatever opportunities existed in our lives, to develop and use our allotted talent, be it large or small? "Each shall receive his share from the Lord", is Baha'ullah's assurance.
(The Universal House of Justice, 1985 Oct 14, Suffering of Exploited Children)