I am an easily bored Omega-level being, and I want to play a game with you.
I am going to offer you two choices.
Choice 1: You spend the next thousand years in horrific torture, after which I restore your local universe to precisely the state it is in now (wiping your memory in the process), and hand you a box with a billion dollars in it.
Choice two: You spend the next thousand years in exquisite bliss, after which I restore your local universe to precisely the state it is in now (wiping your memory in the process), and hand you a box with an angry hornet's nest in it.
Which do you choose?
Now, you blink. I smile and inform you that you made your choice, and hand you your box. Which choice do you hope you made?
You object? Fine. Let's play another game.
I am going to offer you two choices.
Choice 1: I create a perfect simulation of you, and run it through a thousand simulated years of horrific torture (which will take my hypercomputer all of a billionth of a second to run), after which I delete the simulation and hand you a box with a billion dollars in it.
Choice 2: I create a perfect simulation of you, and run it through a thousand simulated years of exquisite bliss (which will take my hypercomputer all of a billionth of a second to run), after which I delete the simulation and hand you a box with an angry hornet's nest in it.
Which do you choose?
Now, I smile and inform you that I already made a perfect simulation of you and asked it that question. Which choice do you hope it made?
Let's expand on that. What if instead of creating one perfect simulation of you, I create 2^^^^3 perfect simulations of you? Which do you choose now?
What if instead of a thousand simulated years, I let the boxes run for 2^^^^3 simulated years each? Which do you choose now?
I have the box right here. Which do you hope you chose?
So I may prefer to take into account preferences of my sims when deciding, because I may end up in a situation in which my fate would be decided by my sims who use the same decision algorithm. And if Omega tells me that he has created n simulations of me which have completely equal experiences that I have had until now, including the dialogue with Omega, I should assume 1/n probability of not being one of those simulations.
Is that it?
Basically, yes. This is what EY called "symmetrism" in 3 Worlds collide and Greg Egan described in one of his short stories. Basically, a more sophisticated version of "do unto others...".