Most people are familiar with, or at least have heard of, the account about the fall of the first human pair, Adam and Eve, in the garden of Eden. Were they made with some intrinstic defect in the genes right from the start, a sort of design flaw that predisposed them to sin and disobedience?
The Creator God, whose works are all perfect, proclaimed that his crowning earthly creation was "very good". Genesis 1:31 As further evidence of his satisfaction with his work, he gave the first couple his blessing and instructed them to be fruitful, to fill the earth with human creation, hardly the actions of someone uncertain of his handwork. Genesis 1:28
However, our first parents were not left without guidlines. Rather, they were warned of the consequences of wrongdoing. Genesis 2:17 So the evidence indicates that when Adam was faced with a moral decision, he "chose" to do what to him seemed expedient or advantageous at the time. He followed his wife in her wrongdoing instead of considering his relationship with his God or the long-term effects of his action. He also tried later to shift the blame to God, saying that the wife God had provided misled him to sin. Genesis 3:6,12
Likewise today, each responsible individual is obliged to make a personal decision about serving God and meeting his requirements. The choice is yours. Galatians 6:7,8