Plenty is doing.
"The notion that we could dispense altogether with the concept of human nature is fashionable but it is not, I think, actually an intelligible one at all.... [Even Marx, arguing against Bentham,] remarks, 'To know what is useful for a dog, one must study dog nature.... Applying this to man, he that would criticise all human acts, movements, relations etc. by the principle of utility, must first deal with human nature in general, and then with human nature modified in each historical epoch."
Disclaimer: this quote appears here only to spark discussion. It is not endorsed one way or the other. Make up your own mind. Or just refresh the page for another viewpoint. From a collection assembled by the late Chris Brand.