re: Centrism
The universe used to be geocentric, then it became heliocentric and now it is space-and-time-centric (one beginning in space and time)...
It's a little like Mars:when it was realized current conditions don't allow for liquid water, the argument shifted to liquid water in the PAST!
Because for some reason, water and life must be found there.
The big bang is a very straightforward theory: it all started at a singularity, but it looks so simple.
We as humans do have a lack of imagination but as long as some scientists can come up with something wild and be listened, it's fine!