>It seems to me like all of these people are flocking now to healthcare fields. That seems totally unsustainable.

Why? There will never be a shortage of sick/dying people. So medical staff, and also undertakers, aren't going anywhere.

Because most healthcare spending comes from tax dollars.

My understanding is that healthcare keeps growing because the large Boomer generation is aging. When they have passed though, then we should see a corresponding slide in healthcare growth