1. special creation (the idea of being made by aliens just sets the question back a step).
I'm sorry, but special creation sets the question back REGARDLESS of entity. Let's say we definitively prove that abiogenesis cannot occur under any conditions anywhere, and that initial lifeforms must have been manufactured.
That does not get us to who, how, or why. And miracles would just be handwaving. What mechanisms were used would have to be investigated.
If we find out it was some powerful intelligent force outside of our time and space, it could be powerful extradimensional beings or Gods, the next relevant question will still be what came BEFORE THEM. How did THEY come to exist. An answer that as Gods or noncorporeal beings there was no other thing before them, is not automatically true nor acceptable.
And I should add that if it IS considered good enough for God, then it could be true for extradimensional entities/aliens as well.
Other than that, I agree that we are faced with the possibility of life naturally occuring or being created intentionally... heheheh, or a mix of both.
Is there any reason to prefer one choice to another?
Given that there is no evidence for intentional creation outside of myths in books written by humans, with each creation story of one faith rejected by the other, its a bit odd to suggest that intentional creation has any reason to be believed, other than a nice feeling such a thought may provide.
On the other hand there are lots of complex chemical reactions which have the potential to become the precursors for life, and then life, and carbon compounds are found throughout space. So that latter option (natural), while having no direct evidence, does have some plausible mechanisms and has as yet no contrary evidence.
I don't know which one is true, but I do know which one is the most supportable from a scientific standard as a theory.
I assume you agree with this analysis?
holmes
"...what a fool believes he sees, no wise man has the power to reason away.."(D. Bros)