Multiverse Morality

I see this as really key to understanding the wider worldview expressed by Popperians. 

The big mistake I notice from non-popperians regarding MWI are the moral implications. For them, typically, the implication is that there is no morality because everything that can happen will happen somewhere, with nothing special attached to what happens 'here'. 

The reality is clearly different, and, I think....possibly this is the source of the attachment of Popperians to the counter-intuitive. 

The true moral implications are actually really stunning and profound. Definitely putting morality to the centre of everything...above even physical reality itself in a way. 

Only by living purposefully...being consistent...being philosophically correct....not compromising on principle, not living arbitrarily, not living altruistically...only by doing these things can you in this one universe exert influence into the multiverse itself, and ultimately shape who you are. 

I get that. I see the beauty. I see the objectivity. 

I see the marriage of that to Popperianism, Rand, and all the rest. 

I see why it isn't just bad to be altruistic but actually evil. Actually evil...because you can't do it for other people. You can't give them a multiverse presence by helping them. The one exception being philosophical..if they are seeking. 

If they are seeking...then in a way you do have to be altruistic because you can't shape the multiverse all by yourself. Only together. 

So I do see it. 

But then I wonder...why doesn't this specific argument get put to the centre? Psychological, political, philosophical reasons, what? 

And then I wonder...is this moral beauty the attachment to MWI that causes the problems to be overlooked? Is MWI too beautiful to be wrong? Is that what this is all about?