Every question comes with a frame of reference, a set of assumptions that help it make sense, a background against which it blends or contrasts. If we examine our frame of reference, we must provide a new one. How does this process end?
Relativism recognizes that we can analyse the same thing from different perspectives, by changing our assumptions. It does not insist that we must value them all the same. That sort of relativism deserves a different name or qualifier. Maybe we should call it value relativism, or meta-relativism, or just nihilism.
We struggle with our thoughts to make plans that succeed. We rationalize our actions and seek to justify them in retrospect, hoping to maintain or improve our status. Maybe we're just curious.