Why is it that people who never use a service ought to be forced to suffer its externalities? (That is: pollution, strip-mining for resources, &c, which dispro

Why is it that people who never use a service ought to be forced to suffer its externalities? (That is: pollution, strip-mining for resources, &c, which disproportionately affect the poorest people in the world, and benefit the rest of us.) "Externalized costs are, like, totally someone else's problem, man."