[quote=Mantido]
If we're going UNCOUNTERABLE NATURAL DEFENSES, then why shouldn't we all have some kind or another? That's just silly. You don't see me saying I'm surrounded entirely by tundra that will freeze people from the feet up if they walk on it, but there's a well-defended highway for people to use instead. A lot of it is a balance issue. Even if this stuff is real and even if it wasn't GM, it'd still wreck the balance because you're essentially in an unassailable fortress.
[/quote]

Hear, hear.