When my folks went camping, we always just cooked over a campfire. Mom did bring along an old rack from an oven or a refrigerator (they had the same kind of racks back in those days). We would gather up rocks for around the fire, and then the rack went on top. She cooked with an ancient cast iron skillet that they had since at least the Great Depression. We had one of those old-time coffee pots which had nothing inside of it, you just dumped the coffee grounds into the coffee pot when it was starting to boil, and then set it to the side of the campfire so it didn't boil over. Once it had steeped the coffee grounds, they would sink to the bottom; but we alwasy still had grounds in the bottom of the coffee cup. that was just part of the campfire coffee experience !
After i grew up, and we took our kids camping, we usually did it the same way. Sometimes, we went to a campground, and they usually had the BBQ grills to cook on when we went there.
For me, I think it would just lose some of the good memories of camping if we took along a bbq grill and didn't make our meals over the campfire.