Interestingly, I once wrote a creepypasta following a very similiar belief system by the name of "The Omnideoist Theory." Though it was more or less written as a short horror piece, it should illuminate my idea well enough.
Have a link! I have to say that I do agree, and I draw mainly upon the enigmatic nature of human consciousness, being there no other explanation for it than that that it's of an incomprehensible makeup. This would explain other powers of the human mind, such as astral projection and other things. In fact, I'd like to say that the existence of such an inexplicable experience as sentience could support, if not outright prove the idea that there is something more to the Universe than the average human can physically comprehend. After all, reality is of our own perception, and, if we control our minds to their fullest extent, could not be so arbitrary.
I think that consciousness is an extradimensional entity, which is actually encapsulated by the physical body. Therefore, upon death, our minds break free, and we will be able to view the Universe in directions and ways that were never before possible. Thus, the afterlife could be very much like a lucid dream indeed. In fact, lucid dreaming could be but a small taste of what the afterlife will be like. Humans are only so capable of perceiving reality round them, and when we're set free, we can only speculate as to what it will be like, and even that would be fruitless. This is always a fascinating concept, and I'm glad he OP brought it up.
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