My point is that I do not change my beliefs to believe I will win the lottery for the same reason that you under your model of the multiverse do not change your preferences to make yourself happy with the world as is. I was trying to communicate that reason, but instead, let me just say that my model does not add any extra issues that you did not already have with the question "Why don't you just try really hard to not care about the things that bother you?" in everyone else's model.

I am not understanding the rest of your post either.

I am not trying to put anything under the concept-label of "existence." I am trying to say that "existence" is a meaningless concept in the first place.

I can't steer my subjective experience, because there is no one future subjective experience. However I can steer the experience of my future self within the simple universes, which is exactly what I want to do.