Many religions require people to do good for the sake of God. They only have to follow His commands and live peacefully. They are told to be sociable and help each other and when they are upon the 'truth,' they find contentment. And once they do this, they get Paradise. Had God said that the only way to enter Paradise would be to kill somebody, chop off your own hand, or fore go your relationship with your parents - it would have been harder. Or if God said you must force someone to Hell if you want to go to Paradise by deceiving them and hiding the truth from them, that would make things very different as well.