I wanted to point out that the end of the universe doesn't happen. The closest outcome there is would be the "big crunch", which reboots the universe. However, that void that kobuk mentioned isn't really a void: it has energy and matter spread throughout it, however it's not matter in the sense we know it. Life could live on, but not life as we know it.
I felt it was almost appropriate that this thread surfaced, with having a death in my life just now.
No, I would not say I'm emotionally involved in fighting my point, the only emotion is grief for a loss. Nothing that would interfere with my civility or maturity or behavior, and it is thus allowable. I fully respect the rights of others to think as they wish to think.
From my experience, we all strive to see ourselves as meaningful, as something in this space-time continuum. With the deaths of loved ones, it's almost as if we could create a life for them through the construction of an afterlife.
I've though ever so heavily about this since I was 5, the age at which I'd say I had my first great awakening, when I was truly born and forged as who I am today.
Now for my actual explanation into what I think.
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Here is an extremely simplified and abbreviated version of what I think:
You, your awareness of self, this is what you could call a soul - this is who you are. It is the summation of all data and processes that you have access to, in this case all the memories and though processes you experience in your brain. The entire universe is composed of data and processes, virtually all of which are outside your awareness - you might not 'see' them, but you can interact with them. My lamp is On. My computer is ON. My harddrive is plugged in. There are buttons being pushed on my keyboard. Each little event, each little status of anything and everything is a form of data and processes. We're like little bubbles in the air: each contained individually, unable to interact with the outside universe or the contents of other bubbles, but we're still made of the same stuff as the outside atmosphere. We're like the neurons of a brain: able to detect and control what's going on within us and sense and interact with our neighbors (thus directing them indirectly, such as talking to someone to tell them to do something), however, we arn't aware of the actual brain we compose. Such as you can't 'see' the 'mind' of the universe - similarily, this 'mind' can't easily impact us in any direct manner. Just as you can't tell a neuron you want it to activate, and the neuron next to it to not.
Once the bubble pops, it releases the atmosphere within to the outside world. Likewise, your awareness itself would slip into the universe's 'mind'. You still leave an impact on the world though, the data and processes you interacted with during your life. This impression is what lives on, what conserves your data. If you choose to, you can make a lasting impact, you can have immortality as "you" and not simply slipping back into anonymity.
I do believe that someone is still alive if you can remember them. It may not be a complete or fully accurate semblance, but it is a piece of who they are, a bit of their impact on the world. Information and data as to who and what they were. And if you can find every bit, you just might be able to rebuild them.
I have personally confronted what death means to me. My only fear is to die before I have completed my goal, and thus, in a way, I do very much fear death. Not what lies beyond, I have come to terms with that. It's the fact that I need to make the most of this life, to make some sort of positive impact that lives, on and carries a piece of who I was. I have no wish to be lost into nothingness, and thus I must make of large of an impact as I can.
And as new bubbles form, all of us will be back within them. We ourselves are really part of that greater mind, and in a sense, we could be described as one and many. It is that mind which must live on in the end, and if we can improve the world, perhaps one day we can build a heaven. We are all bound to return, and thus we should make the world as nice of a place as we can for ourselves.
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Thus for me, it is important to me that I confront deaths immediately in order to remember who a person was, and to store that.
"From my experience, we all strive to see ourselves as meaningful, as something in this space-time continuum. With the deaths of loved ones, it's almost as if we could create a life for them through the construction of an afterlife."
This is my way of giving them a bit of that afterlife.
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My beliefs are simply what I think, based upon my experiences and knowledge I have available to me at this point. What others believe is up to them, and I fully respect their right to that.