Maybe they felt kinda silly spending so much effort getting up there, and found out that it was just a giant sphere of rock with really nothing else. Digger give them a good reason to go back.
It could be a little like internet dating I suppose. You finally meet face to face with the person on the other side of the screen... only to have both of you found each other to be "less than ideal" at the cafe. Maybe you don't want a second date...![]()