In relation to community-building, movement building, or other forms of politics as a "project" -- "fuck it" seems like a justified response (although maybe it would be more to the point to say why these endeavors are detrimental). But that doesn't mean, for me, that it would be possible to just live one's life, since inevitably one is imbricated in various kinds of conflict, seeing as everyday life in capitalism is tantamount to warfare, whether or not you're consciously aiming to "change things."