Originally Posted by
pinniped
I would assume that anybody remotely considering whether or not to get GE already has a passport (or is already certain they will be getting one). If you are not traveling internationally and do not plan to, then there is no point.
More to the point, you can't get GE without a passport. Not only a question of future travel or whether you are considering obtaining a passport, but the simple fact that GE is tied to an existing passport.