In recent years the camping has been mostly state park campgrounds. We see a lot of people do inconsiderate or ignorant things but not often truly stupid.
One weekend we had a site that had a nice cleared, and elevated, view of the lake. People kept walking right through our site to take pictures of themselves in front of the lake while standing next to our tent. All... weekend... long.
Can't tell you how many people tie their dog to a tree at the edge of their site without noticing that it is also the edge of our site. It's great to spend all weekend with a hungry, bored, or territorial dog glaring at us. Or two dogs. I love having hungry dogs drooling at me while I'm making a lb of bacon for my family's breakfast. Or when the idiot gets up at 5am to walk their dog, it gets away, and runs circles around our tent.
Somehow I always end up with a site full of kids. I'm good with kids, long time youth coach, so it doesn't bother me. What bothers me is that nobody knows where these kids are. I don't know what site they came from, if I can feed them when I feed my kids, when they are supposed to be back. My kids are used to being around fire and knives. Are these kids? I have no idea. Then the parents eventually come looking and give me dirty looks for being around their kid. Erm, sorry I was friendly and played tag football with your kid? Maybe you should have done some of that.
My absolute favorite, though, is the SUV full of fat people. The type that show up at 7am saturday morning because setting up in the dark is too hard. They yell all weekend because they are too lazy to move closer to each other when the want to speak. They fight all weekend because they are too lazy to do any of the work. The kids are obnoxious and complain all weekend about missing their shows. They are too lazy to go anywhere so they are at the site every hour screaming, complaining, and making the rest of us miserable.