Pensioners three laws:

1.  You can't win.
2.  You can't break even.
3.  You can't get out of the game.

Applies to vanagons, electricals, batteries and time.

Works with string theory, superconductance, and lots of other vital stuff
about why the vanagon rusts.

Better to wear out than burn out or rust out.  But you still will be out in
the end. So spend it wisely.