Anyone can do anything they want. Being Christian doesn't make a person more moral. Being Atheist doesn't make someone immoral. Morality is not dependent on one's religious beliefs. Christians believe in doing certain things to get into Heaven. They want to please a God that they believe will punish them for actions he doesn't sanction. Atheists don't believe that. I do not believe in a Heaven or a Hell or that there is life after this one or in the existence of a vengeful God that judges and tests and strikes people down. That does not mean I just do whatever I want; morality be damned. I am a very thoughtful, caring person. I give to charity, I don't drink, I don't smoke, I don't do drugs, and I am always there for anyone who needs me. I don't need the fear of punishment in the afterlife to motivate me to care about my fellow man.