It also means you can shoot people from a hotel window and not be concerned about being held accountable after you die.
What absolute stupidity. First, presuming that you are speaking of Stephen Paddock, do you have some evidence to suggest that he was an atheist? Because, if so, this is the first I have heard this. Second, I don't choose to not shoot a bunch of people - I certainly believe that the gene pool could use some cleansing - because I am afraid of some punishment in some mythical "afterlife". I choose not to shoot a bunch of people because I'm worried about punishment
here, and now. I happen to like not being in prison, and would prefer to not spend the rest of my life there. I am also rather attached to living, and would like to continue to do so for as long as possible, and see no reason to give anyone the excuse to relieve me of my life.
Anyone who is so morally depraved that it takes the threat of some "eternal punishment" in some mythical afterlife, to make them behave themselves, has a lot bigger problems than their irrational belief in God.