How is it lower hanging fruit? If people move out into the country, then non-food goods will have to be transported to them instead. You're just swapping one problem for another.
Individual action isn't the solution to a systemic problem, because there's more incentive to cause the problem than to fix it. Individual action requires time, money and effort on behalf of the individual, whereas the ones causing the problem have financial incentive to continue causing it, in greater amounts.