Good article and to the point.
For me, 2 reasons...
1. it's the expense! Criminy, I can't afford to ship a vehicle to Africa or Australia, I keep hoping that lottery makes it possible, but I guess I have to by a ticket first!
2. There's so many places here that are worth the long weekend or the more carefully planned week-long adventure, and I can meet people that are very different than me, which adds so much to my travel.
I do have places outside our "safe" borders on my list, and I will click them off one at a time, but until then, and in between, I will continue to go to places like Mojave, Bears Ears, San Rafael Swell, the Sierra's, and almost anywhere in Colorado to fulfill my need to connect back with nature! Which, for me, is the point.
Dan.