What does it matter if some parts of our culture are better in "easily measurable ways?" If one is making the case whether or not these people should be exposed

What does it matter if some parts of our culture are better in "easily measurable ways?" If one is making the case whether or not these people should be exposed to the Western world, one must keep in mind the net utility that would be added to their lives. It could very well be negative. At that point, higher life expectancy and education would be irrelevant.