What is the appeal of exterior televisions?

My wife and I are currently shopping for our first RV. It seems like a lot of them have exterior TVs. What is the appeal? You could only see the screen well after dark. If I am camping and going to be in the dark outside, I would want to see what the dark provides, like stars or a campfire. If I want to watch a movie, inside would be a lot more comfortable. So, what's the appeal?