I think that's what General Discussion is for.
It seems this board is mostly used for talking politics and JTF issues though, which of course are the 'general' subjects of this Forum.
An off-topic area for discussion of more mundane things make sense to me. Or if this General Discussion board is in fact for that, there should be a different board for Politics, Current Events, etc...and it should probably be placed at the top.
I think the ideal would be a new category for all Off-Topic stuff. Within said category could be a board for Film, a board for Literature, a board for Music, a board for Sporting, a board for Outdoors/Wilderness Survival (or include that as a sub-board in sporting), a board for Cooking and Recipes...I bet the ladies (and some men too, myself included!) would love this one, and so on and so forth.
This category should, if implemented, probably go somewhere towards the bottom, and perhaps boards that seem to have no real home, like the guns and self defense board, could also go into the off-topic category.
In any case, it's just an idea I had. I think every forum, even serious ones, should have a place for off-topic and lighter discussion. And as has been said, it would also help keep the more serious boards free of useless and mundane clutter. Of course it makes no actual difference either way in the scheme of things.