I get what you mean.

When your own lives are disappointingly dull you begin to seek that thrill elsewhere, and for some that thrill comes in the form of a secret alien conspiracy.

But when people make these aliens their whole worldview to the point where they no longer trust evidence, that's when they cross over into delusion and that's where the problem begins.

Human love coming up with stories, but when it gets in the way of reality...that's when you've gone too far, yknow?