Wow, Mccallum! I suppose mental health is a question of acceptability. People who act out of the norm are considered crazy unless they have money. Then they are considered eccentric. Any time one deviates from the conventional pattern, one is termed mentally unbalanced. I've been there for many years. I hike, I boat, I fish, I camp, I hunt. Anything else is an hiatus from my path. Am I crazy? Most likely I am, at least as it would conventionally be defined. So was Henry David Thoreau, Benjamin Franklin, Julius Caesar, Gandhi, Kevin Heinemann (you don't know him but i do), Sir Francis Chichester, Malcolm X, and Beaver Cleaver. If you think outside the box, you're a nut.
Daddy always said you need to think sideways. You have to look for things that others don't. This is what promotes health in all of those on this site. Why would any sane person put themselves in harm's way? Why do you go out into the wilds when it is infinitely easier to sit on your duff in a civilized area and order a pizza while watching a bunch of overpaid athletes beat the crap out of eachother on a gridiron or a diamond? It's because you are nuts!