Gary, good question. We stay about half and half, boondocking or pivate or government. Never liked math a lot. LOL The reasons we will stay in a private campground is when we want to plug in to power. I really dislike the sound of generators and find too many with people, boondocking at times, when we need to do laundry or when the weather requires the AC or if it is smokey for a forest fire. Some places we tend to stay in privates more than others, such as for a 4 or 5 day stay in Whitehorse, also in Fairbanks, in Valdez and a couple of more places. We do like the provincial parks and national parks, where they enforce the generator rules. I much prefer to take a shower in a campground facility as my Lance camper wet bath wasn't designed for a guy my size, 6'4" and 285 lbs. It fits my wife fine, 5'2" and 125, but not me.
I have made trips to and from Alaska when I was sleeping, wrapped up in a surplus tarp and bag, showering every couple of weeks, whether I needed one or not. LOL
So there are lots of reasons why people stay in private campgrounds. Somewhat the same reason why some travelers stay in motels instead of tent camping.
Some people think those of us that own RVs are nuts for spending that kind of money. You as a Canadian, could be driving a diesel Smart Car and getting 65 mpg and sleeping in a tent in a boondocking site. Then you would really save money. I have a good friend, with lots of money, that has a Liberty converted Prevost bus. However he will drive miles out of his way to stay in a cheap or free camping spot. At about 6 mpg, he is spending more on fuel looking for those cheap sites than he is saving, but to him, he is saving money. I tend to think of the "back to the land" movement when I was in my 20s and 30s. People wanted to grow their own food, windmills for power, raise goats, attend rock concerts with others of the same thoughts. Not sure any of those folks ever saved any money doing it their way.
Sort of like don't condemn the other guy, because he sins differently than you do. LOL