Please, don't put word in my mouth. What I mean is a none expanding universe does not make sense with our current knowledge. You may cite esoteric experiments and unconfirmed hypothesis as much as you like, that does not change the fact that the standard model work so good we have no reason to believe it is wrong in its basic principles (dark matter and string theories etc are not part of the standard model - we talk about our daily physics now, physics we use to make airplanes, cars, cameras, computers, nuclear power, our understanding of radioactive decay etc etc physics all found on Earth).
If the universe does not expand it would affect basic (standard textbook) physics as we now it. Physics would be wrong - somewhere! But where? For all we know it works, and it works very, very, well. So what is wrong?
To highlight this:
Assume the universe is not static, that space does not expand and galaxies are not at rest.
Then why do we only see redshift? Why do we never see blue shifted galaxies? The "second" - discarded - explanation to this is; our galaxy is the center of the universe and everything moves way from it. But why would that be? There is nothing we know about that says it should be so, rather for all we know; if galaxies started at fixed points - static - that would be an extremely unstable configuration and will tend to create collapses, creating both red and blue shifted galaxies. However the universe is only red shifted and that implies that, under this assumption, that all known galaxies in universe has its origin from our galaxy. But why would that be? And what made them escape in the first place? There is no know laws of physics that can explain this. What process ("laws") was in place at the time all matter was together to allowing all matter fly apart forming what we see today? Is it cyclic? Was all matter spread out and then focused on one point and then flew out from that point again? In other words what caused this expansion? How do we explain all this with current physics and the "fact" that we are in the center of all this?
Such universe simply does not make any sense to us so it was discarded.
A third explanation:
Assume the universe is, for some unknown reason, is static and galaxies are at rest.
Then why do we observer redshift? Is it because the spectral prediction of quantum mechanics is wrong? Is it because we do not understand optics? Also what is wrong with nuclear physics? Why do stars exists in other galaxies? Why does things even look the same in other galaxies if emitted energy levels are changed? What have we got wrong with nuclear and atom physics? Or is our physics correct and these spectrum are signs of new - for us unknown - super heavy elements? But why would these super heavy elements make stars that shine? And why doe we not observe it in our galaxy? And why is that the spectrum changes for different galaxies? And why is it always red shifted, never blue shifted? Does the shift mean that each galaxy has it own physics - or its own elements? If so, why do other galaxies still look so similar to our galaxy?
Such universe does not make any sense either....
Or assume something else:
We can assume the universe expand, and everything will be all fine and well with old knowledge - knowledge which we know works - and nothing needs to be changed in our understanding of things.