Only in sex the noise sometimes stops. I say "sometimes". If you have become habitual in sex also, as husbands and wives become, then it never stops. The whole act becomes automatic and the mind goes on its own. Then sex also is a boredom.
RajneeshSannyas means dropping the fight with the river, going with the river, allowing the river to take you, learning the art of let-go. Those two small, simple words 'let', 'go', define the very spirit of sannyas. Then one can say 'Let thy kingdom come, thy will be done.' Then one withdraws one's will, and the moment you withdraw your will your life becomes immensely rich. Suddenly the whole is with you, and we can be victorious only when the whole is with us.
Rajneesh