In games that I have played in charisma seems to be the favorite dump stat for mechanical reasons. I always thought that creating a dull heroic character was a little bit weird but then again I tend to like charisma focused characters. I like to choose wisdom for my dump stat because in general I think it is down right foolish to enter a dungeon, cave or crypt or engage in battle against an enemy of greater or equal power. So here is my question if you had no mechanical, class, or race reasons to pick any stat over another one, which stat would you use as your dump stat?