Great post, this makes it easier to think about certain things. For instance, I value future versions of myself unequally leading to investing in trying to create some of them and destroy others. If I am correctly extrapolating, then the future selves I destroy are the ones that would not have wished on reflection to have come into existence. If I am incorrectly extrapolating, well the implications are scary, and this makes good epistemic hygiene feel sharper. That in turn makes something difficult, like taking the outside view on how happiness research applies to you even when your intuitions disagree, somewhat easier.