At the age of 67 you have done a lot for the country, employer, whatever you want to call it. You need to get out there and see the world with your wife and do things together while you're still in good health and mobile. I keep on telling my mother (who wants to work until she is 70) that you only have one life. You only have one shot to go out and enjoy yourself out there. Even if you have to live on a fixed income, at least you will spend your golden years with friends, family, and going out on different adventures. I wish you luck!