@Draug
That doesn't seem unreasonable.
@Doom
Neither. I don't like your idea for two reasons:
1) It seems to violate the Cosmological Principle, which, based on my limited understanding, seems solid.
2) Heat death seems more likely than the universe falling back on it's self. Entropy alone seems to guarantee this.
I don't like my idea for two reasons:
1) I made it up by the seat of my pants
2) At some point, mass would simply become too dense and would reach a singularity. I see no way that they could remain distinct being that close.
So, where does that leave us. Well, so far the best explanation is the Big Bang. I don't think it's great, personally, but it's the best we got. Now, there are two things that can happen from here: we find out what set off the big bang, or we disprove it. Since my daily actions aren't actually influence by the BB, I'm content on waiting. In any case, neither scenario will prove determinism, and one could very easily reject it.