Because nothing physical proceeds from nothingness.
You really do need to use more precise language.
When you say “existed from beginning of time to now”, do you mean
- always existed, without beginning
- came into existence at the beginning of the existence of the universe
or something else? I thought you meant the former, but your phrasing here seems to indicate the latter. The latter isn’t a problem – sure, there could have been “unstable energy” that was created in the Big Bang. But, that’s not what you seem to be arguing here.
Unless you can demonstrate that anything contingent can exist without a cause, then your argument here is sunk. (And, of course, you realize what the definition of ‘contingent existence’ is, right?)
If your concept made sense, then you could make that claim. It doesn’t, so you can’t.
Yes, I agree that you need that assumption in order for your argument to hold up. I’m not calling you out on that. Rather, I’m asserting that your assumption is not necessary in the context of the universe; and therefore, your argument doesn’t hold up.
Happy? Perhaps. Proven that it’s true? Not even close…
Quite. In other words, your “unstable energy” did not exist before the universe was created. Therefore, it itself is created. You’ve just dismantled your own argument. Congratulations.
Depends on what kind of ‘proof’ you’re asking for. If you want empirical evidence of a transcendent being, then you’re not making sense. If you want philosophical reasoning, then Aquinas’ five demonstrations suffice.