At least an incitement to watch the video. Having stopped going at least implies in the past we made trips there, and could do so again. Money is the answer given, but the larger implication is our growing global resource scarcity, since we print all the money need to match real resource supply availability. Also it was a great power competition, which after being won at the limits of planning and capability, there being no further reachable targets, and tangible returns not so great, other political priorities, such as global oil hegemony, became more important.