Why would we only perceive some aspects of the universe as tangible, but others not?

Stable-state vs Volatile-state Physics

Field, wave and fluid dynamics are the key to understanding the nature of the universe, not particles and matter.

Our senses return more information about stable-state particle/solid matter/mass (PSM)  in our perceptions so that is what we focus most of our attention on.  I can only feel the table because of the atomic field it is composed of does not merge with the atomic field I am composed of.  Our normal mundane senses provide information that allows us to navigate through the parts of our environment we can collide with, be damaged by or consume.  So by definition, any form of volatile-state field/wave/fluid (FWF) that does merge with us in a non-damaging or symbiotic way would not be perceptible, and thus not seem real.

1. Ludwig-Maximilians-Universität München (2010, May 16). Quantum dynamics of matter waves reveal exotic multibody collisions. ScienceDaily. Retrieved March 2, 2013, from http://www.sciencedaily.com­/releases/2010/05/100514094836.htm
2. “The wave equation is ubiquitous. Although this equation represents most accurately electromagnetic waves, it is also applicable to acoustic waves, whether they be in gases, liquids or solids. The dynamic interaction between excitation ampli­tudes (E and H fields in the electromagnetic case, pressure and velocity fields in the acoustic case) is displayed very clearly by the solutions to the wave equation. The developments of this chapter are here fore an investment in understanding other more complex dynamic phenomena.”  From Haus, Hermann A., and James R. Melcher, Electromagnetic Fields and Energy. (Massachusetts Institute of Technology: MIT OpenCourseWare). http://ocw.mit.edu (accessed 2013-03-02). License: Creative Commons Attribution-NonCommercial-Share Alike
3. Wave–particle duality postulates that all particles exhibit both wave and particle properties. A central concept of quantum mechanics, this duality addresses the inability of classical concepts like “particle” and “wave” to fully describe the behavior of quantum-scale objects. Standard interpretations of quantum mechanics explain this paradox as a fundamental property of the Universe, while alternative interpretations explain the duality as an emergent, second-order consequence of various limitations of the observer. This treatment focuses on explaining the behavior from the perspective of the widely used Copenhagen interpretation, in which wave–particle duality is one aspect of the concept of complementarity, that a phenomenon can be viewed in one way or in another, but not both simultaneously. from http://en.wikipedia.org/wiki/Wave%E2%80%93particle_duality

If the ‘vacuum’ of space is really a very low density fluid, while the dark matter of space is really a very high density fluid that we do not perceive because light and electromagnetism do not interact with it.
Planets seem to have a kind of analogous life-cycle to that of biological entities. When alive they have a liquid core, with moving fluid, dynamic surface, magnetic field.  Once the heart stops beating the rest dies too.
Since light is distorted by gravity, why do we use it to measure so much about space?