Isn't this only true if there is no physical infinity? I know it's-turtles-all-the-way-down is impossible for our brains to comprehend, but causality breaks down when infinities are involved. Another thing is that if space-and-time itself was born at some point (as they say), then talking about "before" and causality doesn't make any sense either.
But yeah, to your point, thinking that there was never "nothing", and that there always was "something" is equally mindblowing.
But yeah, to your point, thinking that there was never "nothing", and that there always was "something" is equally mindblowing.