Because we've all been instantiated, so to speak. So a process to instantiate us exists. This, right there, destroys the theory that death must necessarily be the end of us.
You're entire argument seems to confuse possibility with probability. I'm not arguing that death definitely is the end of us, just that the evidence seems to support that conclusion over and above your position of continuance.
I never implied continuity. Merely that whatever process that took people from unordered matter into thinking conscious entities could happen again to us. Black box the process. You've had no counterarguments to this other than saying that it sounds awfully dubious.
So, without continuity, in what way can you say it's "us". You've offered nothing I can see in support of this claim (which seems to be central to your overall claim).
Ah, but I'm not talking about the copy who appeared on the spaceship. I'm talking about the copy on the planet. Would you (as that copy) actually beam up? Or walk into the annihilation beam after a copy of you was accidentally made up in space?
Personally, i'd likely not walk into it, because as far as I can tell, my consciousness depends on my specific neurons - I would cease and a copy (which thought it was a continuation of "me") would continue on the ship.
Where did that consciousness come from? We don't know.
We do - the evidence points strongly in the direction of it arising from our neurons/brains. The question is exactly how it arises, and that is being investigated (contrary to your claims otherwise).
What happens to the consciousness that is annihilated? We don't know.
Yet the evidence seems to strongly suggest that the consciouness "ceases", because it requires the brain (as far as we can tell).
We know it exists, and that's all that matters.
And yet you still want to claim that it will somehow continue or reappear after the brain, which as far as we can tell is required for that consciousness, is "destoryed".
Is it logically possible that our consciousness will be "re-instantiated", "continue" or otherwise survive death?
Sure it is.
Is it possible in reality?
Maybe, we don't know for sure.
Is it probable/likely in reality?
It doesn't to be given our present knowledge and evidence.
What you need do (and have thus far failed to, it seems) is support this logical possibility as physically probability with arguments and evidence. Failing that, I see no reason to think that your claim is likely/probable, and therefore no reason to accept it (nor a reason why you do).