There's a couple of reasons, one I think they are to hard to figure out and are given up on, there's not that many left to discover possibly five out of a hundred or less. People with lots of early information, The folks that placed it there came back and got it, ask your self ( and and I have no Idea ) the countries that have a lot of treasure stored up and not much mining going on, where does it come from, a lot of folks like myself just enjoy the hunt, you don't have to kill anything, no ones property gets destroyed, its healthy living, a challenge, outside one with nature, and who knows, folks do win the lottery, everyone thinks that everyone who is a treasure hunter is a winner, well that's not always true at all, for the most part its just folks that want to have fun, enjoy live life in their own way, as a matter of fact your chances of winning the lottery is better, most have stories to tell, I almost found the big one, or the big one got away, I almost got close ( I use the last one myself ) I have seen my share of symbols, followed the trail and seen ( what I thought was the end ) I have heard stories from all around the countries. Do I share, almost always, I have had three heart attacks ( I have less than 1/2 of a heart left ) allergies, 72 years old, got Gout in both ankles and knees, I use crutches a lot of the time, would I trade all the trails that I've followed for my health back, the answer is no. Its been a blast