Sin? No problem, God will forgive it. No incarnation needed.
Sin? No problem, God is love and accepts you as you are. No Mediator needed.
Sin? No problem, just repent of it and follow Jesus' teaching. No atonement needed.
Sin? No problem, just stop doing bad things and start doing what God wants. No regeneration needed.
Sin? No problem, just start over again and keep trying. No justification needed.
Sin? No problem, stop beating yourself up. No eternal consequences. No wrath no come. No hell to avoid. No Saviour needed.
Don't neglect the biblical doctrine of sin or you will go astray on the biblical doctrine of the Saviour and his work.
