I didn't provide enough context to illustrate that my point was about selfishness and avoiding feelings of obligation or guilt?
I am not immune myself even though I levelled the charge. I only get through the day by generous application of denial.
If I can't avoid seeing someone hungry, then plan B is figure out a way to conclude that it is within their own power to feed themselves, and so not my problem.
Failing both of those, then I have to deal with it. I either have to share my food with them or I have to consciously decide I'm ok with keeping mine and ignore their misfortune.
Obviously, intellectually, academically, I know that the world is one big continuous stream of unbelievable tragedy, and I can't actually live even one second for myself if I were to try to treat all of that the same way I do when my own partner suffers so much as a headache. So I don't. I pretend everything is fine by arranging things so that mostly everything I see is fine, and when I see something else I mostly rationalize some sway to ignore it. I drive right by that guy standing at the intersection with the sign, etc.
I just at least try to be self aware that I'm doing that and not confuse a sanity/survival strategy, however justified and necessary, for reality.
I'm saying that a lot of people don't seem to do even that last little part.