I love how the game SOMA deals with taking (or not taking) someone's, or something's, life. It is never an easy moment. And with no commentary (with some haunting exceptions, https://youtu.be/pmC6naegRgo?t=161), no external reward or punishment, you need to carry the burden of your own decisions.

Some people says they will be judged (only) by God and history. In SOMA, there is neither.