Which is stronger - human nature or the prohibitions and requirements of the many available current belief systems? Those who could live sublimating their nature's requirements but instead live by God's requirements (In the "Kingdom of God" of Jesus, for example, that all churches should be but aren't) probably had very much less worries and stresses that they were SAVED from.
..... I am reminded of Max Freedom Long's books about the Secret Science; the Hunas of Hawaii believed that in every person there lived 3 entities (as I remember reading it):
1) The Cry-baby - I want this and this and that and I want them all NOW!!! BAAAAH!
2) The logical, reasoning mind in the brain, the manager of the body's functions
3) A super-intelligent entity that lived in the super-conscious, is in contact with God, and can predict the future which can be changed.