If you've got something that I can do with a wife, a 6-year-old, and that won't make me lose my job or blow through my savings, I'm interested. Otherwise, I'd just be reading fantasy.
You sound as if you don't believe you can have adventures with a wife and a kid?
I think what Clark's writing about is great and inspiring and everyone should do more of it. However, for me to be interested in a how-to book, it has to be something that actually applies to me, and skiing from the North Pole isn't something I can do with a kid.