OK--first of all, I agree 100% that this topic is overblown. Keep a clean camp, avoid other campers who don't, and you won't have any problems with bears.
But that said...
Now we are going back in time--when I travelled with my parents and younger sister on an epic road journey through the Canadian Rockies. We camped our way through Banff and Jasper, and then down the Frazier River, all the time reading endless Tolkein books as entertainment.
But I was about thirteen years old, and not about to give up my mountain man image. While the rest of the family slept in a small 15-foot travel trailer, I slept like a real man, nestled in my mummy bag, lying out under the stars.
It was a great feeling, until one night in Jasper National Park, when I awoke to find a bear standing on top of him, sniffing his face. It was apparently attracted to the minty fresh smell of his toothpaste.
You might wonder what I did.
Did I mention that I was in a mummy bag, and the bear was on top of it?
I couldn't move, even if I wanted to. And somehow, in my sleepy mind, I knew that. So I closed my eyes and pretended to sleep. I smelled the bear's breath, which reminded me very strongly of garbage.
(Not surprising, considering what the bear had been eating!)
About twenty seconds later, I judged that the bear was no longer near me. I opened my eyes and looked around, to see the bear rumbling off to another campsite.
I leapt to my feet and carried my bag into the trailer, explaining to my family that there was a bear outside.
Not knowing the full story, they were not excited.
Then I stuck my head out of the trailer to check on the bear. And that's when I saw a small black animal scampering along the campground road, wailing for its mother.
"maaaaa!" said the animal.
I reported to my family that there was also a little black lamb out there.
My family was mightily amused.
But the next day, the story was verified by bear and cub tracks in the dirt.
That evening, I and my sister were BOTH out under the stars, surrounded by folding aluminum chairs and rope--hoping to catch a photo of the bear when it got near.
(This is a true story. really. We were idiots.)
The bear never arrived. Although it did find another campsite further along, where a mother and her daughter had gone to sleep with some food inside the tent. The bear opened up the tent and ate the food, sending both women to the hospital as a result.
FYI--this is a great story to tell young campers who might be tempted to sneak a candy bar into their sleeping bags for a late night treat.