Morality as anti nature

assuming that Nietzsche is correct that conventional morality is against our natural expression of passions, argue a case that suggests that while he is correct, the truth is that people must be restricted in their natural expression, 

which moral statements clearly recognize dangerous natural inclinations and restrict them? 

what benefits do these restrictions provide to the individual as well as to society as a whole? 

how might Nietzsche react to your argument?