A man's ethical behavior should be based effectually on sympathy, education, and social ties; no religious basis is necessary. Man would indeeded be in a poor way if he had to be restrained by fear of punishment and hope of reward after death.
It's time for Deep Thoughts, with Jack Handy (yeah I'm annoying, but they're funny!):
Why do people in ship mutinies always ask for "better treatment"? I'd ask for a pinball machine, because with all that rocking back and forth you'd probably be able to get a lot of free games.