People don't care about being duped as long as they're happy, which is the shortest form of happiness; hence 'self-duprication' becomes a habit.
Sacrifice by its strictest definition takes something precious in exchange for the appeasement of a higher power. And abiding devotion to a cause that cannot be satisfied with a simple promise. Because an oath no matter how solemn asks nothing in return. While true sacrifice demands unspeakable loss.
Roots cannot grow into trees if there are no supernatural elements in the soil. Man cannot grow wealthy and famous if he doesn't contribute to either, the good or evil.