I have been "stealth reading" this topic, until now.
My boondocking experiences have been great. Alaska has a lot of ideal spots for that. I remember many Canadian spots, including provincial parks and campgrounds, where there were only a handful of campers and highly dispersed. And with piles of used berries right in the middle of the road. That's a good sign in my book. Scares away those who think nothing of leaving TP on the bushes.
My less than ideal camping experiences have always been in popular places such as Jackson Hole (we got in very late and had to park between two Class A skyscrapers and next to the all-night drive-up liquor store) and in Rocky Mtn National Zoo, er, Park.
The farther away from people, the better, in my experience.