If we believe a human being is ensouled in some way, or that we’re the loved and cherished children of some all-powerful deity, then it’s pretty easy to see why you ought not to murder. If you kill someone, you are offending and upsetting God, and risk everlasting damnation(Thomson, Jonny)

The answer is as follows. The great contribution of Enlightenment thinking was to settle on the idea of the value of human life and the belief that it should be protected and that all people should flourish in freedom and prosperity when possible. Human energies should be put to making human life better for as many people as possible. People have rights, and deserve to be treated with dignity. All people. (Tuker Jeffery.A