You've made some great points, and I do agree that the brain already experiences virtual reality. My university has a 3d theatre where you sit 4m from a 15m screen. I got the chance of sitting in the best spot, where my entire vision was filled with this gorgeous, 6*HD 3D screen. The same feeling of Oculus Rift but with much better graphics. And it looked very real, I thought I was actually moving while I sat in my chair. The power of tricking the mind is amazing, and very real. Maybe I have a different definition of beauty, but for me, beauty isn't purely based on what I can see. A structure can be beautiful by what value people give it, by how long it's been standing somewhere. A place can have value because you can't just teleport yourself there. Similarly, is the view on top of a mountain just as good if you didn't have to climb it? I doubt it.What I'm saying is this: reality does not hold beauty. The feeling and recognition of beauty is a subjective thing, a brain thing. And the brain can be tricked pretty good.
I buy that. In our moon simulation example, let's make it really good. Exact. Even you have to complete a simulated astronaut training program and fly there and it's all sufficiently plausible in it's realness. But even if you do this a hundred times, I think if you could actually go to the moon, and even if it's not any different from VR in any major way -- I think it's likely it would feel different. That you know nothing mediates your senses from reality, you would most likely pay a special type of attention to all it's details as real details. And you'd look up at the Earth and damn. That's it! What happens if you could fool your brain into believing that? Where does it become unethical in manipulation? Where does it all become nonsense? These are the things I struggle with.A place can have value because you can't just teleport yourself there.
That's some Matrix stuff right there. I think it really depends on what you intend to do with such an advanced VR technology. I wouldn't call it unethical if you use an immersive technology to gain experiences. As long as the participant knows it's fake, it seems ethical. To experience VR is to basically lie to yourself. You lie to your brain That doesn't mean it's necessarily bad: in a game of poker, you're lied to all the time. But that's because it is a part of the game, and everyone knows it happens. When you willingly enter a virtual reality, you know that it is just that: virtual, fake, never truly real. It gets unethical if someone is put into virtual reality without them knowing. When reality and virtual worlds are mixed up, when the line is blurred.