How Much Is an Astronaut’s Life Worth? – Reason Magazine:

Put simply, when the agency takes some $4 billion in taxpayer money per year to fly humans into space, it really has to fly them there and put them to good use. That amount of money, if spent on ground-based life-saving efforts such as childhood vaccinations, swimming lessons, fire escape inspections, highway repairs, body armor for the troops, save (at the government average of $2 million per life) roughly 2,000 lives. This is the sacrifice that the nation makes so NASA can run a human spaceflight program. In the face of such sacrifice, real results are required.