Sannyas is celebration of life, and sin is natural: natural in the sense that you are unconscious - what else can you do? In unconsciousness, sin is bound to happen. Sin simply means that you don't know what you are doing, you are unaware, so whatsoever you do goes wrong. But to recognize that "I am a sinner" is the beginning of a great pilgrimage. To recognize that "I am a sinner" is the beginning of real virtue. To see that "I am ignorant" is the first glimpse of wisdom.