Your claim that the singularity did not exist until your god created it is NOT a part of the consensus of science.
I didn't make that claim. Of course we are inquisitive people someone is bound to ask where or how did the singularity come about?
I don't think you understand what a singularity is.
It's not an object, it's a mathematical result of attempting to describe an object, that yields a nonsensical answer.
It's a limitation of our mathematics - what happens when you try to use an equation or equations to determine the properties of an object, but the equation includes a division by zero, is called a singularity.
We get around singularities by finding equations that get correct results, under a wider range of conditions.
The equations used in quantum mechanics get correct results when used to describe reality where electromagnetic, weak and strong interactions dominate, but are unwieldy and so unusable at very large scales. Fortunately, Einstein came up with a set of equations called 'General Relativity' that give correct results for very large scales, where gravity is the dominant force.
As we consider earlier and earlier periods in the history of the universe, there comes a time when the universe was extremely small (so quantum physics is needed to describe it), but when gravity was the dominant force (so general relativity is needed to describe it). But trying to use both sets of equations together results in nonsense.
That's the singularity. The singularity is not the state of the universe that we are trying to describe; The singularity is our failure to describe it due to inadequate equations.
We can say, with very high precision, how the universe is today; And how it was going back in time several billion years. But there comes a point where the universe is very small and dense, and our current mathematical models don't give us any information about how it was just before that point.
People often refer to that as 'the beginning of the universe', but that's just sloppy language; It's merely the beginning of our understanding of the universe.
It's not a point at which the universe itself began to exist. People have speculated that it is just after the universe began to exist, largely on the basis that extrapolation of the size of the universe suggests that it reaches zero a minuscule fraction of a second before the time of the singularity. But that's just speculation - by definition, we don't know what was happening at or before the singularity, because that's what 'singularity' means.
But with better models, which lots of very smart people are working on, maybe we will be able to work it out one day.
Unifying quantum theory with gravity is clearly very difficult, but we have no reason to think it's impossible. And if it happens, the current singularity may well disappear - and may or may not be replaced by a new singularity even earlier in the universe.