First, you need to divorce yourself from religion when thinking about this topic, otherwise, you will continue to assume religion and spirituality are the same thing. Just set aside religions for a minute, and think in terms of human spirit. As Breeze pointed out brilliantly, "LIFE" is spiritual. The magical thing that we call "life" and "living" is a spiritual thing, not physical. Yes, physical things are happening to perpetuate a state known as living, but the actual state itself is spiritual.
There are indeed many unknowns, even with the best science. The questions of "WHY?" are often not even addressed by science, they can't be. For instance, we don't know why the properties of electricity behave as they do, we know how, we don't know why. We can explain how we see things in color, but why? Science is inadequate at explaining the WHY part. This is where spirituality comes into play, and it has been around since man discovered fire.
Now, we have to ask ourselves, why are humans the only creatures of life who have this need for comfort, explanation of the unknown, fear of death, etc.? We don't see dogs and cats trying to figure it all out, or being afraid of dying. This is purely an exclusive human attribute....curiously, we are also the only living things that have spirituality and worship. I do not believe that is a coincidence. So what you are basically explaining spirituality with, could also be the result of spiritual connection. We need comfort and explanation because we are spiritually connected, while other forms of life are not. Meaning, you have your assumption reversed. We're not spiritual because we need comfort and explanation, we need comfort and explanation because we are spiritual.
Why humans are the only creatures asking these questions is easily answered. We are the only ones CAPABLE of doing so. I'm really not sure why any other explanation is needed.
Why are we the only living things capable of this, and also, the only living things who are spiritually connected? I agree, we are capable, but why? And why hasn't any other living thing, achieved this capability or anything remotely similar? You see, I think all our unique attributes of human imagination, creativity, cognitive reasoning, inquisitiveness, humanity, wisdom, intelligence, etc.,etc.,etc..., come from our other unique attribute, our ability to connect spiritually to some power greater than self. This is the thing that makes us different from a chimp who shares 98% of our DNA.
Again, I believe it is not a coincidence we are also very spiritual and spiritually connected to something greater than self, which drives human ambition. Our species is certainly not superior at everything, have you figured out what birds are saying to each other when they sing? Why bees and ants can find their way back home or organize and work together in colonies and hives? Why birds can migrate back and forth to the same nests, year after year, generation after generation? Lots of things are better than humans at doing certain things, but we are the ones who have advanced our species to where we are. Spirituality is a big big part of that, regardless of how much you'd like to dismiss it.
Well, I think I just addressed this in my last paragraph, but again, I realize where man is and how intelligent we are, but I also realize we have been intrinsically and inseparably tied to spirituality for all of our existence as well. I don't think this is coincidental, and I don't think you can use our success to explain away the very thing that led to our success.
But this is because you demand some sort of evidence. I am not claiming religion is right and the god I am referring to in the OP is the god of Abe. I have repeatedly made the clarification, I am speaking of god as a metaphor, for whatever it is humans are connected to spiritually, because they most certainly have been connected to something. I think this connection sometimes manifests itself into an undesirable religious belief, but for me, that is just more evidence that humans do make some kind of spiritual connection to something.
To the idea that life is spiritual....*sigh*. Once again, a clear definition is needed or it is a statement with no real meaning. Fine, life is spiritual. What does that mean? What is it about life that makes it spiritual? If life is spiritual, why are humans the only creatures with a spiritual connection? What evidence is there that life is spiritual?
You can explain how life works physically, you can't explain why. It just does. We have things that are inorganic, which simply exist as matter. And we have things which are organic, and these are special, they have a special attribute the inorganic things do not have. They are "blessed" with the ability to grow. Taken to their simplest molecule, they are made up of exactly the same things as the inorganic, but there is something which makes them different. We can explain how these things work, the various chemicals reacting, etc. But we can not explain WHY?
Why are humans the only creatures with spiritual connection? Why are humans the only creatures to achieve what humans have achieved? ...I think the answer is the same for both questions.
This continues to be a matter of you assigning explanations that don't actually explain anything, throwing the word spiritual around as though it answers questions when there is no clear definition for how you are using the word in the first place. At this point I consider your definition of spiritual to be, "anything for which there is no answer".
I keep hearing that I have not explained "spiritual" in this thread, and I wish you people would stop lying. Really. I mean, the first time or two, I figured you may have missed my explanation and so I repeated it. But this is getting tiresome and old real fast. For the last time, I will explain this to you: Spiritual means non-physical. Spiritual nature means, the realm of our universe that is not of the physical realm, defined by physical nature. This could be another dimension we are incapable of recognizing from our physical realm. I do not profess to know the answer to that. I do know this spiritual realm exists, because I connect to it daily, as humans have been doing since we arose from the muck, apparently.
The OP makes clear that we must first define what we mean by each word, before we engage in a debate of the question. I pointed all of this out there, and I have repeated it throughout the thread, and to come in here on page 47 and claim this hasn't been sufficiently established, is very intellectually dishonest.