"....Materialism is simply true in some obvious and intuitive way. There have been no real breakthroughs in thought with this. It is simply fallout from the general nihilism and carelessness that has overtaken modern academia in general. Meanwhile, ironically, it is
matter itself that has fallen apart in several very profound ways.
First of all, the materialist used to be comforted by the evident
solidity, and hence reality, of matter. Dr. Johnson refutes Berkeley by kicking the table (or something). Yet now the physicists have delivered up atoms that, but for a few subatomic particles, are empty space. Indeed, although this is rarely stated openly and flatly, atoms are
entirely empty place, since the fundamental subatomic particles (
quarks and leptons) are "Dirac Point Particles" which have no extension. Popular "string theory" doesn't help this, since the strings are one dimensional objects which do not fill space any more than the point particles. This means that all that actually fills space are
fields, and there is no agreement in physics about what a field is (with different versions in Relativity and Quantum Mechanics). So all the comforting solidity of matter has evaporated into thin, nebulous, and uncertain alternatives.
More seriously than this, we have the Copenhagen Interpretation of
Quantum Mechanics. According to Niels Bohr, nothing exists until it is observed. This isn't exactly the suspended judgment of the Positivist, since Bohr does reference an empirical or phenomenal realism of the observed world. It is the unobserved world that dissolves into a "probability cloud," which reflects the nature of our knowledge rather than the nature of the external world. The result, consquently, is something that looks very much like the opposite of Materialism.
Existence only occurs in consciousness. This is traditionally called "Idealism," and it stands Materialism completely on its head."
http://www.friesian.com/nothing.htm