Perhaps the answer lies in our nature as purposive beings.

And, as an organization, the Chinese state is far stronger and more purposive than states are in more typical developing countries.

It will remain reasonable, he wrote, to be economically purposive for others after it has ceased to be reasonable for oneself.

Now what's interesting here is that this is a quote from Dave Weinberger, where he talks about everything being purposive in the Web there's nothing artificial.

The Supreme Court of Canada stated that a liberal and purposive interpretation of the Québec Charter of Human Rights and Freedoms and a contextual approach support a broad definition of the word handicap , which does not necessitate the presence of functional limitations and which recognizes the subjective component of any discrimination based on this ground.