A little bit of background:
As some of you may have noticed, my main interest in philosophy is of metaphysics. I've studied philosophy in a very postmodern environment; but contra to the people around me I grew fond of the modern philosophy - of Leibniz and Spinoza, Kant and the Neo-Kantians - and have always pushed back from the postmodern view while still absorbing some of it to my critical thinking.
Throughout all of my readings and arguments (especially since I've joined this forum) I've always questioned my thoughts, and the postmodern post-truth ideas have always lingered in the back of my head. One of those ideas is that metaphysics is "over", it's some kind of a dogma that the 20th century has rid itself of, particularly because metaphysics is the field of interpretation, and as a good Jew I should know that almost everything is interpretable to fit almost anything. And when we can take something and interpret it to fit whatever we want, it'd imply that this something is essentially meaningless on-its-own (i.e. it doesn't contain any objective truth).
Now I'm not going to talk about the benefits of metaphysics, I'm just going to ask if the statement "metaphysics holds no objective truth, only subjective one" holds water? Is there any "scientific" meaning to study metaphysics (other than being an interesting field to provoke thought-experiments that may lead to scientific theories)?
I'll try to elaborate a little bit further, influenced by Peter's answer and the comments section in it.
What I'm trying to emphasize here when I'm talking about the "subjectivity" of metaphysics comes to light when we consider metaphysics as mostly the interpretational part of it - where the big ideas such as naturalism, idealism, nominalism, solipsism, etc, comes to mind. As Peter puts it, we can consider the "results" of the purely analytical research of metaphysics to be essentially the same for each and every philosopher that has ever approached it. But the interpretation of these results are, as Carnap said, "serves for the expression of the general attitude of a person towards life", and can't comprehend some objective truth.
That's the subjectivity I'm pointing at here. Hope this clears things up.