These are all just funky ideas, don't take these too seriously but they could be fun to consider:
How about the poetic justic of a universe that repeats itself with big bangs and big crushes, while your consciousness forms in other people you've influenced in past or future cycles of the universe. Maybe the journey is finally finished once you've experienced life from every point of view ... and hopefully learned something from it
Or that more conscious minds could live along side yours, experiencing things in the same body. They grew up with you and act similarly, so we don't typically notice much but consider things like multiple personalities or the more instinctive actions you do with your body that you don't consciously think about - how about dreams? Yes, these could be described by chemical actions in the brain, but then again that also describes your consciousness, so who's to say?
Or that our consciousness resides in an alternate dimension and brains operate like radio antenna. Our minds perceive things in first person perspective but that's only because our remote senses sense them that way - sort of like watching television - it looks like your in the middle of the scene but you're actually watching something elsewhere. (It's interesting how religious views tend to track current scientific views)
Or here's a mindbender .. to me ... what if God
really DID exist?! Imagine having discredited the guy for decades and then he's staring you in the face ... pondering what to do, with a rather flat expression on his face.
Now this one only questionably applies, but if you have an exponentially growing populace, and there's a sudden catostrophic event that occurs to end this, if your life is randomly selected out of the entire history, you have a good chance of seeing "the end". That's because no matter what period of time you pick, more people are alive at future dates. So the area under the last X years (X depends upon the period of population doubling, or how fast the population grow) is the same as the population that has lived from the start. This doesn't correlate very well with human history and it doesn't deny alternate "endings" that don't have a catastrophic end but it still tends to imply people could be living closer to the "end of the world" than simply being alive at some random period of time in history. I just wanted to give everyone reading this a nice warm fuzzy feeling
If you want to push the "disturbing" envelope, it's easy to come up with some nightmare scenarios for nanotechnology, mind control, or possibly weapon developments, but I prefer lighter subjects.