Those religions which are designed primarily to aid people live happily are not very useful in realizing GOD and hence they seem silly some times. Religions which are designed primarily to realize GOD and use happiness and success as tools, are bound to lead. Such religions only demand to be successful so that there is enough fuel (life) to pursue realization of GOD. This way we are at a much higher abstraction and lot of sayings like "don't take success to your head", "don't hurt others" etc. are automatically explainable.
My only favorite is Judaism! For e.g. it talks about sex much differently than other religions since sex should not distract us away from our path to GOD. If a religion is not designed to keep people on track happily it's going to be face trouble.