Sin is not a fabrication

Sin  in not a fabrication it is real and it is what separates us from the Father. God gave Adam dominion over the world  in Gen. 1:28. When he rebelled against God, he set in motion an entire series of events and changed the very nature of man and creation. Both were affected by sin. Creation was no longer a paradise, but bore thorns and thistles.    Sin is rebellion against God. But God has not left us alone in this fallen state.  His Son is brought  to the cross so that we might have the opportunity to obtain eternal life. In this, God has not stepped away from his fallen creation, but has stepped into it by  sending Christ to pay the sin price for us.
Even the non believer is perplexed by why such evil things happen in today's society.  Question such as the following are often asked of Christians:   Why is there suffering? Why are the innocent victimized? Is there purpose in pain? Is there any escape? For the Christian, who believes that God is all-good and all-powerful, answers to these questions are especially important. Because usually their argument says, “If God is all-powerful, he could prevent or eliminate suffering. If God is all-good, he would not want his creation to suffer. "And God shall wipe away all tears from their eyes; and there shall be no more death, neither sorrow, nor crying, neither shall there be any more pain: for the former things are passed away." (Revelations. 21:4).
Suffering is the result of human sin aka (evil or bad) Even the Catholic Church calls it evil instead of sin.  There will come a day when the Lord will return and cleanse this world of all sin and all suffering.

No being a Christians does not make you immune to sin. For we are sinners saved by grace, not something we earned but it is simply God's favor.  Being showed to those of us who are able to admit that we need him. Admitting  that we are not good enough to enter heaven without his grace and mercy which was the blood of Christ that covers a sinner like you and I.