Quote Originally Posted by stevENTj
the hell if I know.
Quite so. This sentence might actually describe the INTp desires quite accurately. Basically - the 'I want something...but I don't know what it is' attitude - could be best described by the word longing.

Both from personal experience and from experience of others, I have observed that there is a selection of people for whom, literally, the world is not enough. They want something more, but have no idea what it should be. I guess it's related to Ni in combination with thinking preference.