Let me explain the biggest philosophical rut that I and the rest of the 21st century's forward thinking folks are stuck in. Most people, even highly intelligent and well-read ones, will ignore this issue, often, I suspect because it makes them uncomfortable as no great answers to it are forthcoming.
The problem is that we humans really have no sufficient basis for forming any lasting metaphysical philosophy because as we are living in a scientific age where any such philosophy must be based at least somewhat on the standard epistemological foundations. And yet as soon as we create one based on the scientific knowledge as we know it to be, a new fact is discovered which destroys this philosophy from the very beginning. There is too much change going on in modern times about our understanding of humanity and the universe for any philosophy made today to be long-lasting. Trying to make one is an effort in futility.
For example, it's silly to try and deduce functions of human psychology, which is popularly done in modern society, because few of those conclusions have evidential support. In order to truly be convincing people just want to see the scientific study and the data found. The conclusions from those fancy philosophical thoughts can easily be disproved based on experiments done by a graduate student at some community college. Perhaps that is a little exaggeration, but still there does not seem to be much value in thinking about the fundamental drives and reasons for human action without first considering input from guys like neurologists and psychologists.
And yet to live meaningfully in our short existences we must find a philosophy by which we can judge actions and goals and virtues in a way that does not seem forced or artificial. To do so we _must_ find our thinking going outside what is known and what perhaps what can be known. Perhaps we conceptualize things like gods, or geists, or the Good, but in any case we are escaping from scientific thinking and considering the irrational. And yet our rational, critical minds won't allow us to seriously consider such things.
We find that we must consider the irrational but at the same time we cannot consider the irrational. Absurdity of absurdities!