A brilliantly inspiring article - I would LOVE to do what you are doing, and now you've written this, I know how much it costs! Out of interest, does that $40k a year mean you hold steady with what your investments pay you, or is it a mix with going through savings? (And if you've written an article all about this, just point me in the way of it). I guess my question is... is this lifestyle sustainable forever for you guys? Keep living life in such a great way. So inspirational.