Why Something Rather Than Nothing?

[datc]

2. What are the logical or physical objections to infinite causal regress?

There cannot exist an actually infinite number of real objects (as opposed to ideal objects like abstracta like numbers, sets, or possible worlds).

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An obvious question that can be asked by an atheist at this point is: When was Earth's essence joined to its existence, given the assumption that Earth is everlasting

No, it can not be asked by an atheist, because it is a nonsensical question if our universe is everlasting in the past and future as you assume.

An atheist can object to my argument by pointing out that seemingly, at first glance, this question ("When was Earth's essence...?) has no answer.