"Live a good life. If there are gods and they are just, then they will not care how devout you have been, but will welcome you based on the virtues you have lived by. If there are gods, but unjust, then you should not want to worship them. If there are no gods, then you will be gone, but will have lived a noble life that will live on in the memories of your loved ones." I know that this isn't from Marcus Aurelius, but I agree with the sentiment behind it. If God gets pissed at me for not believing in him, something that I either could not prove or have proven to me, then I wouldn't want have to believed in him anyway.