How far would you go... to get your answers?

Please note that I've been intentionally avoiding the latest TV spot, which apparently is very spoilerish. So, obviously David is a central character to the story in some way. The thing that springs to my mind is, is he immortal? Or does he have a half-life like his Blade Runner replicant counterparts? I don't recall if the other synthetics in the Alien series had any predestined lifespan; presumably they required regular maintenance on the part of the company. The next question is, if he is immortal, and assuming he possesses the same kind of drives and motivations as his creators (ie. humans), then what would drive him? Curiosity? And would this be manifested as a benign pursuit of knowledge, or a festering malevolence directed at the beings he was created in the image of? I don't think it's spoilerish to say, but please stop reading if you are worried about any level of spoilers-- but I believe in one of the interviews or featurettes, it's mentioned that David is reviled by his human colleagues, and treated very much like a second class citizen. The "uncanny valley" incarnate, if you will. Given that he has no capacity for resentment, this shouldn't present a problem, but then of course the age old trope of a self-aware and sentient AI, that comes to resent its creators, or be disillusioned with them when they can't provide the answers it seeks. "Who am I? What am I doing here? How long have I got?" Or worse, it is satisfied with the answers of its masters and is only too "happy" to do their bidding (as in Weyland Corp's nefarious ends). Oops, more spoilers, these are of a more distinct spoilerish variety: It has been remarked that Guy Pearce's character is searching for immortality and may actually be present in the film (and not just in the TED talk). So by the time Project Prometheus actually launches, he will be decrepit and old, and at the limits of what the then-current human technology can do to extend his lifespan. If the desires of that creator extend to his android creation, which possesses no limitation on his lifespan, how would that complicate or transform the thing's mission? It is searching for immortality for its creator, but the android itself has effective immortality. Anyway, it raises some interesting questions. Personally, I would love to see a twist in the form of a cyborg "hybrid" along the lines of "Ghost in the Shell"... one of the characters turns out to have a human brain inside a completely android body. This is probably beyond even the advanced technology of the future in which Prometheus is set, but would make for a good twist, and perhaps might explain why Fassbender had to focus so much on creating a performance that is a distinct contrast from the humans around him... but no, I imagine that's more to do with it being a "prequel" and his performance has to be different from how Ash and Bishop turned out many years later. I think I'm probably straying much deeper than the concepts and ideas the film will actually raise. I mean, it's Science Fiction, leaning toward the more "hard SF" variety, but ultimately it's probably just going to be a horror film with lots of jump scares, but a few interesting ideas sprinkled here and there, which is not necessarily a bad thing!