Too many countries that do not play by the free trade rules of the World Trade Organization - including, notably mercantilist China and monopolist Saudi Arabia - have been allowed in, to the detriment of both the WTO and the liberal trading environment it is supposed to sponsor.
I think that age as a number is not nearly as important as health. You can be in poor health and be pretty miserable at 40 or 50. If you're in good health, you can enjoy things into your 80s.

