I don’t agree that any materialization existed just before Big Bang. The term “Big Bang” doesn’t mean anything like bang. I think it’s only introduced to emphasize “the process that takes place “everywhere” simultaneously”.
And that’s really it:
If there didn’t existed anything that means that there existed only nothing, even there didn’t exist even two different eternally small points, as the space and time didn’t exist (“nonexistence” didn’t take place within time and space). When we say that the process began from some center it doesn’t mean that this center really existed and it had size. We probably want to figure to ourselves how the process of existence started. As nothing is homogeneous, it means that it’s equal or rather the same in its “different places”, so we can figure it as one center, but it doesn’t mean that this imaginable center is any kind of accumulation of energy.
It only can considered as bearer of potential for arising of the world, as it had a possibility of change (the only kind of change within this “center”, or within nothing is splitting of it into two opposite phenomenon), so the assertion that something existed before the world arose I think is illogical, cause the question from what this “something “originated demands explanation as well.
My statement might be trivial, but I don’t see any other way. You can look it through at
http://autorestore.gol.ge/index.html