One of my points is though, when a religious person asks this question atheists immediately turn the question onto them which is not what I want this debate to be.
You say why 'would' you want to murder someone. If doing so would make your life better then apart from fear of being caught why would you not if it wasn't for morality. Again, this is an extreme example.
Stealing might be a better example. You steal something off someone else and don't get caught. You have made your life better by taking it and someone you don't knows life worse. Why not do this if you an atheist?
You say why 'would' you want to murder someone. If doing so would make your life better then apart from fear of being caught why would you not if it wasn't for morality. Again, this is an extreme example.
Stealing might be a better example. You steal something off someone else and don't get caught. You have made your life better by taking it and someone you don't knows life worse. Why not do this if you an atheist?