Same as any other energy cost. Modern societies rely on some type of energy to exist. Maybe the poor people will suffer because they can’t afford to fill up their vehicles with the cheaper dirty fuel and miss out on work opportunities. Maybe everybody suffers because the cheaper dirty fuel catalyzes harmful pollutants into the air which everybody breathes.

I guess it’s easy to say don’t buy cheap fuel because it’s bad for you, but if the alternative means not having a job or something to people with little to lose, that’s a call that’s harder to sell.