Man and Machine
These two points of view are, quite simply, that of the human and that of the machine.
The human needs to be engaged, informed, entertained, motivated to action or inspired. The machine needs to know that certain information is in the right place to rank a site high in a search engine.
Allow users to find you easily, allow the same users to have a need fulfilled by the engaging and intelligent content on your site, and you're on to a winner!