God created man to be imperfect. Everyone who has ever walked the Earth, is walking the Earth, or is yet to be born to walk the Earth, walks it in sin. Jesus Christ wasn't even created to be morally perfect. He faced the same temptations as the rest of us and stayed above them on inner strength.
It's the most natural thing in the world to sin because all it requires is that you do nothing about your failings...You just roll with it as long as your conscience will allow it. The will power to rise above sin is what sets the moral apart from the sinful.
Just remember: No matter how sinful or how moral you are, every morning that you're fortunate enough to roll out of bed alive until the day you die, your immortal soul is in REHAB!