The motivating example here was the statement of “I’m not going to be hurt by disease X so I will do nothing to prevent harm to others who are impacted by the d

The motivating example here was the statement of “I’m not going to be hurt by disease X so I will do nothing to prevent harm to others who are impacted by the diseases spread.” This isn’t self interest. This is selfishness. They gain nothing by helping others than avoiding minor inconveniences. I would also note that major religions revolve on explaining the differences and providing a vantage for judging the boundaries between self interest and selfishness. The fact some selfish people exploit the ambiguities, or even the inefficiencies of selflessness does not obviate in any way the teaching of the religion. Just demonstrates that pursuing a selfless life doesn’t imply lack of critical thought.