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e.g. the 'big bang' theory.  the theorists exist in a culture dominated by religion, which is reflected
in their absurd ideations about how the universe was somehow created ex nihilo, and their concept
of linear time forces them to believe that the universe has a beginning and an end.

hence we might have a theoretical physicist apologising for his deficiencies: yes, the big bang implies
items in the universe are expanding away from each other, but we can observe galaxies colliding.
yes, we have a big bang and a universe consisting of various particles and forces, but we can't
account for 70 - 90% of what should be there.  so please give us another few billions of currency
units that might otherwise go to feeding the homeless, caring for the sick, or other trivia.

I would suggest you go and read up on the latest advances in physics before suggesting it's absurd that matter can be created out of nothing. It can and does.
It's not just "their concept of linear time" that makes them believe the universe has a beginning, it's what the evidence shows.
Galaxies are observed colliding because all galaxies exist in their own "local groups" of galaxies where local gravity can override the force of expansion and cause some to collide. The red shift that Hubble first observed does in fact prove all galaxies are moving away at a continuously accelerating rate though. No contradiction there.
They have accounted for all the matter in the universe - dark energy and dark matter. It's not just theoretical anymore, and it actually makes up the majority of the stuff in  the universe. Actual matter is only about 4% of the entire volume of the universe.

I don't know if you're religious or just have something against physicists, but if these are your assumptions upon which you base your beliefs, you might want to update your knowledge of the current state of physics.

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