Why do all movies seem to be about death?

Earlier this year, I lost two close members of my family. It wrecked my dad. 

I was talking to Nicole about how hard it is to pick out a movie that doesn't make someone depressed. We realized how few movies we could think of that don't feature death, or something similarly heavy. What films are a good way to distract someone for a while, and cheer them up? Even a scene in a movie my dad loves can remind him of something. A lot of Disney movies have a big, wrenching death. Yeah, you all know the one that wrecked every kid while they were growing up. 

The first gentle ones I thought of were Ponyo and Kiki's Delivery Service. I'm sure there's many more, but a casual scan of my memory didn't reveal much. No one dies in Totoro, but the girls think their mom is going to die. And everyone is afraid that Mei might be dead. 

There are so many themes that a story could tackle. And yet so many of them are about death. Sometimes that's very deliberate. But other times, I get the sense that filmmakers feel they have to kill someone off.