If God does not exist then all things would be permissible.

Without the existence of God each person can do what is right in their own eyes. It would not matter if you lived a good life or a bad life because in the end of life each person would be equally dead, and there would be no God to give an account to or divine judgment when one dies. With this in mind, it brings us to a place where there are in fact no moral obligations in life to follow; considering that all morals, empathy, and even love would be nothing of what we ought to do, and in fact we would not know any better. For an atheist to be under any kind of moral obligations, empathy, or love would truly mean that they are following imaginary duties in life. With this in mind, if God does not exist, then at one time in history someone imagined and fabricated morals, empathy, and love. Therefore, they are all manmade imaginary duties in life that with the absence of God/Lawgiver of all morals, empathy, and love there is no human obligation to any of these actions at all. Thus, this would mean all moral obligations in life have been manmade and these things we practice have no more meaning behind them then a manmade soda can.  

  
  

The foolishness of atheism.  
  An atheist can look at the painting of the ocean and say “This took a very talented person to do this art; it took someone very intelligent to paint this.” Another atheist can look at a nice car and say, “This car was made by someone with a lot of engineering and skill.” Another atheist can look at a house and say, “This took a lot of craftsmanship.” However, these same atheists can look at the stars, sun, moon, mountains, ocean, and all the many creatures on earth and say, “This is the product of random time and chance from evolution, and it did not require intelligent design.