Simple. We are becoming a smaller, more isolationist country that wants guarantees. I was at a seminar last year and two of the presenters, from the Apollo era, said that recent studies showed that the majority of students admitted cheating on exams and indeed, said they had not honestly answered questions on the questionaire about cheating. The other, a former astronaut, said we have become a very risk-AVERSE society whether talking about space or the battlefield. It has to have guarantees and any loss has to be immediately mitigated. I asked both, "So we cheat, we are risk averse and we want a guarantee of success... doesn't sound like a good recipe for the future." They glumly nodded and one said, "We could not today take on a project like the moon launch, lose a crew and continue. Public and political outrage would call it to a halt."