Oh, I've no problem with leaving ambiguity, as long as that ambiguity, by it's existence, allows for the possibility it is something truly transendental.
I'm completely happy with that myself. To me, what's really important is that I can see the possibility of an explanation (even if it's not given in that particular case).
So I think that's a point where we both get what we're looking for without one or other having to run off in the other direction

.
And it's also a myth, as I've said several times now, that faith and science are mutually antagonistic.
It's not a myth by any means. Personally, I feel they are exclusive if you really get down to it. Just because other people can reconcile the two doesn't mean my take on it is a 'myth'.
I'd also point out that one should consider that humans are extremely capable of being inherently contradictory in general. So if one assumes - as I do - that faith and science are mutually exclusive then people reconciling the two simply fits the picture very well but doesn't necessarily mean it makes a lot of sense.
Indeed, even in fiction about science, there's value in exploring that very question of how science and faith interact. This is something Sagan's Contact does very well. And there are works of SF, such as James Blish's A Case of Conscience, that approach religious questions through the speculative format of SF -- i.e. positing what-if situations involving religion and exploring their consequences.
I'm at a loss here, unfortunately, since I haven't read any of these works. So I can't comment on them specifically.
But things like approaching religious questions through the SciFi format to me sounds very much like what I'm talking about - assuming there's an explanation, something that can be proven, and trying to approach that. That, however, goes against faith in the sense we've been discussing so far.
So once again, there's no sense trying to explain why religion is absent from science fiction, because that premise is false to begin with. I've already given multiple examples that disprove the premise, examples of SF works that explore religion and SF authors who are strongly religious. One I forgot to mention before is Philip K. Dick, whose later works dealt heavily with theological and metaphysical questions.
I certainly agree that religion isn't absent from SciFi nor do I think it should be. What's important to me, personally, as a SciFi reader is that I can assume there is an explanation to what's going on.
Religion challenges people to believe in something that cannot be proven or substantiated. Hence, faith is required. Science, on the other hand, seeks to explain what happens and provide substantial facts.
Of course, in many cases, both seek answers to the same questions: Where do we come from? What happens after death? But IMHO the approaches are so radically different that I don't see how they can be reconciled (other than assuming they're totally contradictory and being happy with that contradiction).
I expect SciFi to be curious yet sceptical. It can deal with all sorts of questions, I totally agree with that - it's one of the things that attracts me to the genre.
To me, good SciFi can DEAL WITH religion and faith but it can't BE LIKE religion or faith. The question (or the ambiguity) of a possible explanation IMHO should always remain.
So, in the end, I suppose it comes down to how you define god or gods. If you're willing to see beings that are vastly superior as gods then that fits within the SciFi context very well in my opinion. However, if you believe in a god whose existence can never be proven because that is a key part of the faith then IMHO it simply has no place in SciFi. It's the wrong genre because it's taking a totally contrary approach.
Absolutely dead wrong. Science fiction is not closed to any idea. Yes, a lot of it is rigorously scientific and rational, but there's plenty of speculative fiction that's more allegorical, philosophical, etc. It overlaps with fantasy and horror, and it can overlap with other types of metaphysical storytelling as well. To say that all science fiction has to be rigorously scientific and hostile to metaphysical or spiritual ideas is a gross stereotype that is very easily proven false.
Not dead wrong, just my personal opinion: "However, if you believe in a god whose existence can never be proven because that is a key part of the faith then
IMHO it simply has no place in SciFi."
And I agree that it's not closed to any idea in the sense that it can deal with all sorts of issues, a very broad, nearly unlimited spectrum. But there's always got to be the possibility of an explanation IMHO.
That's not to say there's SciFi or what's considered SciFi that goes against that. I'm not challenging that. However, I would question if some of it is properly labeled.
Also, I'm not demanding that SciFi be "hostile to metaphysical or spiritual ideas". I'm demanding that it be scientific at heart - that is to assume there is an explanation or proof whether it is provided in the story itself or not.
To me, a story that concludes that there is, in fact, a God in the described universe and he/she cannot - by any means or at any time - be explained or proven in its existence just isn't SciFi. That's my understanding of SciFi.