You're right, but once you remove that from a historical sequence (i.e. time), it is equivalent to saying that there isn't just nothing. In other words, existence exists.
The concept of "causation" presupposes time.
In a sense, causation actually is time. By that I mean that causes precede their consequences, and the causal sequence of events probably lies at the core of our everyday notion of the "flow of time" from past to future. I know that the literature speaks of time's "arrows", being different manifestations of time, but it seems to me they all reduce down to causality. As always, when speaking with you, I'm prepared to be corrected.