If the words ‘life, liberty, and the pursuit of happiness’ don’t include the right to experiment with your own consciousness, then the declaration of independence isn’t worth the hemp it was written on.
We actually all create our own universe because we are all operating with our own private languages, which are only very crudely translatable into any other person’s language. There’s even a physical analogue to this, which will further reinforce this notion of alien nation.
It is that your picture of the world impinging on your eyes is made of photons. Photons are tiny wave packets, so closely circumscribed energetically that they can be thought of as particles. That means that every single photons which falls under the back of my eye is different from every single photon which falls under the back in anyone of your eyes. This means that I am using 100% a different perception of the world than anyone of you is, to get a picture of the world. And yet we are sitting here, with a naive assumption, that our pictures of the world differ only by our perspective within the space of the room.