That's the worst analogy I've ever heard, by the way.

What you're essentially positively claiming in context here is that somehow - throughout all the boundless infinities of eternity - there is only a small pocket populated by anything at all. And that all the rest is just empty, devoid even of vacuum energy or whatever is causing the dark energy / expansion phenomenon.

But you have tidily avoided explaining why such a pocket would exist when the rest of infinity is so unlike it. Mind you, we're talking about INFINITY, here. So regardless of how large you think the pocket is, as long as you posit that it's finite within an infinite universe, you have to explain why the laws of physics are such that they allow the pocket to exist in only a local region rather than anywhere else. And I do mean any where else.