You seem to have misunderstood what metaphysics actually is. In fact, your assertion that you "believe in things you can touch" is itself a metaphysical belief. Roughly, it amounts to the dominant metaphysical belief today in most university departments of philosophy/logic.
Metaphysics is an academic field, and though involving some level of belief it is completely unlike religion or spirituality. Generally within academic philosophy the goal is to determine what can be known with certainty, or at least to arrive at the clearest, most self-consistent and accurate picture of both what exists and what we know. The level of belief that is required (or perhaps even permissible within legitimate philosophy) is akin to that that you would find in the humanities like sociology or literary theory. In fact, looking at academia, scholars of humanities are generally the ones who attack the belief in physical reality, while generally, philosophers and scientists defend it. I mean, just look at to onslaught on realism, objectivism, and science by men like Foucault, Derrida, and Thomas Kuhn, all of whom worked within the humanities. Compare that to the realism-defending work done by philosophers, logicians/mathematicians, and scientists, like John Searle, Bertrand Russell, Daniel Dennet, Patricia Churchland, most physicists, as well as the Vienna Circle and the like.
