Staged school shootings, chemtrails, Bigfoot... I swear Extended Discussion used to be better than this.

No offence. I think your original post is just a matter of semantics. What does "Big Foot" actually mean? If you just mean an undiscovered species of ape living in some indeterminate area of the world, nobody can really rule that out. Undiscovered mammals exist... this is not controversial. That's no reason to have a positive belief in any specific creature, though.