But that solution assumes a monotheistic deterministic faith to be the correct one. What if one day it was just - Boom, Ragnarok. Would you count on a just and reasonable God to sort that mess out? You don't get into Valhalla by letting other people take the glory, let me tell ya.
I think you have the wrong idea. I approached the question as a simple philosophical one. I suppose another way of putting it is a little like natural selection - some win, some lose. It's not so much opportunity as chance.
...I'm not exactly expressing myself well. Let me try that again... the crux of my argument is that there is no immediately discernable "right", and therefore the mantle of "right" falls to culture, individual etc. (yes, I know this may sound irrelevant, but hear me out). There is a "right", out there, somewhere, but until somebody finds it (and whatever doing so entails), I have to make a decision as to what is "right" (via culture, experience etc.) and stick by it. The point is not whether I'm "right" or not; it's that I contributed to the overall... "pool of thought" shared by humanity, and contributed to the chances of the
real "right" being found (or whatever we think is the "real right" at that point in time).
In the relevant instance, I had a chance of picking the right faith, and I (hopefully) picked the one I thought as the right choice. Picking the right faith would be nice for me. Simple probability declares that (even if only known current and past faiths are considered) the chances that I actually picked the right faith are very small. If I didn't pick the right one, then it's obviously bugger to me on the big night, but what am I? I'm just another lottery ticket. I served my purpose.