Why fight the 'natural' (oh, weaselly word!) order of things? Why? Because of this--one fine day, a purely predatory world shall consume itself. In an individual, selfishness uglifies the soul; for the human species, selfishness is extinction.
Many people think if you say "no" you just do this to negotiate a better deal, and they didn't understand that Daft Punk really meant "no" because they didn't want to do certain things.