I'm having issues trying to organize my thoughts around the epistemic groundwork for metaphysics. I am specifically interested in the competing views of the human mind as something that structures reality and the human mind as something which comprehends reality. The traditional realist will subscribe to the latter, confident that we do comprehend the quiddity of a thing, its form in the abstract, its essence--and they will say that this isn't merely the imposition of structuring concepts onto an indifferent noumenal world, rather it's the recognition of the world as it is. In other words the world and the mind are correlated. This is the common sense view, and our intuitions seem to affirm it.
Now the skeptic will see the human mind as a barrier to reality as it is in itself. On this view we can never really come to know the quiddity of a thing--or even if we happened to we may never know.
I'm wondering what the motivation is for accepting the skeptical view over the common sense view?