Same. I don't actually believe this to be true, but I have had the thought that as I get older there's been a clear progression of tech being created which could convincingly create a fake reality. The thought being that at the culmination of my life will be the perfection of this tech followed by the universe revealing that my existence has been an elaborate generative hallucination all along.
> my existence has been an elaborate generative hallucination all along.
Consider the fact that there is no objective 'blue', there is a wavelength with a particular frequency measured in hertz, but the wavelength is not the same thing as what we know to be color...
See, what happens is: a photon (oscillating at a frequency) hits a rod or cone in your eye tuned to detect that frequency of light: which travels down the optic nerve as an electro-chemical signal (no more photons involved at all at this point). Which eventually turns into a chemical reaction in your brain. That chemical reaction is 'blue' to us - not the photon that never reaches this point nor even the original frequency: just our brain's translated chemical signal; it's interpretation of 'blue'.
Blue is your brain hallucinating what it thinks that frequency actually is... blue is a "guess" at reality...
So yes, your brain IS generating an elaborate hallucination after all.
Even more so than that, “blue” is not even attempting to “guess” at reality. A more accurate statement is that the concept of “blue” is a useful abstraction for the goals of the vision system of your brain.
What makes you believe those photons and chemicals and the brain exist when you have no access to any of that and all of the information about it comes from your mind (the only thing guaranteed to exist)?