To be precise, this seems like a cost to Alice of Bob having a wide circle, if Alice and Bob are close. If they aren’t, and especially if we bring in a veil of ignorance, then Alice is likely to benefit somewhat from Bob having a wide circle.
Yes, but Alice doesn’t benefit from Bob’s having a circle so wide it contains nonhuman animals, far future entities or ecosystems/biodiversity for their own sake.
and my reaction is that none of that stops children from dying of malaria, which is really actually a thing I care about and don’t want to stop caring about
The OP asks us to reexamine our moral circle. Having done that, I find that nonhuman animals and far future beings are actually a thing I don’t care about and don’t want to start caring about.
Yes, but Alice doesn’t benefit from Bob’s having a circle so wide it contains nonhuman animals, far future entities or ecosystems/biodiversity for their own sake.
The OP asks us to reexamine our moral circle. Having done that, I find that nonhuman animals and far future beings are actually a thing I don’t care about and don’t want to start caring about.