You misunderstand Christianity in the way most people do.
"For by grace are ye saved through faith; and that not of yourselves: it is the gift of God: Not of works, lest any man should boast." - Ephesians 2:9
"know that a person is not justified by the works of the law, but by faith in Jesus Christ. So we, too, have put our faith in Christ Jesus that we may be justified by faith in Christ and not by the works of the law, because by the works of the law no one will be justified." - Galatians 2:16
So Christianity is simply placing your faith in Jesus Christ. If you believe that God forgave your sins at the behest of Christ, and that you will enter an eternal kingdom also as a son of God, wouldn't you eventually be more liable to forgive and love others?
So being good is a side-effect, not the point, of Christianity. God will not let me enter heaven because of how good I am, and if that was the measure none of us would make it. The point of Christianity is to know God and have faith that through Christ's death on the cross, burial, and resurrection, he can impart the mercy of God onto you. That he quite literally died for every sin everyone had ever committed.
βFor he hath made him to be sin for us, who knew no sin; that we might be made the righteousness of God in him.β - 2 Corinthians 5:21
> If you believe that God forgave your sins at the behest of Christ, and that you will enter an eternal kingdom also as a son of God, wouldn't you eventually be more liable to forgive and love others?
No. History has been the judge and has left Christianity wanting. You want a faith that truly causes love and care for others? Jainism. "By their fruits you shall know them" Jesus said didn't he? Well the fruits of Christianity are rotten.
Why not just be a decent person without being threatened? It's how the majority of people in the world do things.