Get what you deserve

According to Christianity we are all sinners and we all deserve to go to Hell. The Bible says, “All we like sheep have gone astray; we have turned every one to his own way.” “For all have sinned, and come short of the glory of God.” “The wages of sin is death; but the gift of God is eternal life through Jesus Christ our Lord.” So if I do anything which saves me from eternal punishment it could only be out of pure selfishness. In order for God to be punished, the wicked must be punished. If Christianity is true, then I deserve damnation. Why should I try to avoid it?