I think people, especially those who aren't around bear country, worry a little too much. I used to as well. Living in Colorado I dont feed the bears but I have a trasharoo filled with garbage, I leave the skottle out after cooking with a lid on it. I do put my cook boxes and marshmellows on top of the roof rack. I back country hunt and I even stopped carrying a pistol out there. Black bears generally high tail it when they see a person. In major camping areas in Aspen I have heard of people watching their vehicle getting ripped apart while sitting in their tent, but its not like bears are out to get you.
Be careful but dont be scared. There are things you read like "black bears attack more people than grizzlies" but there are way more people living around black bears than grizzlies. I believe there are more instances that moose cause harm to people than black bears do.
Never had a bear in my camp, but I see them in the backcountry a lot, sleeping in an ultralight tipi. I do hang my food but have no issues with them. I always pee a perimeter around the camp site and let the dogs do the same and maybe that helps. That might be a silly concept but once the beer starts flowing I gotta go anyway!