The only fundamental desire that one is born with, and will not leave as long as life exists, is self-love.The desire for self-love is primitive, instinctive, prior to all other desires, in the sense that all other desires are but evolutions of it.So all desire is natural, if you will.However, most of these evolutions are the result of external influences.Without these external factors, it would never have happened.And these evolutions are not only not good for us, but harmful.They change man's original purpose, go against human nature, and then he finds himself out of nature and fighting against himself.