We Will Have Perfect Health In The Future: Seeing as the top level of medical treatment in the advanced civilizations is to replace your body with a brand new one, fresh out of the tanks and still with that new flesh smell… played very straight.

Somewhat subverted inasmuch as regular medical technology (genetic engineering, artificial immune systems, healing vats, nanosurgeons, etc., etc.) makes it rather more efficient just to stay there and fix the current one than move for minor illnesses, but then, being able to spray a nanofluid up your nose and have your respiratory infection vanish in under an hour is close enough to perfect health for most purposes.  (This, of course, only being necessary in the case when you’ve managed to contract something genuinely new, or else failed to keep up with the service packs for your artificial immune system.)