My dad died of cancer, too young. Grief is a long process, and cancer or parental death is still hard to watch. Sometimes, that's good outlet for me to process my grief, and I seek those shows and movies out deliberately. But usually, when I watch TV, I want to unwind, and not get surprised with some heavy emotional shit.

Frankly, you kinda sound offended that people have preferences for when and how they engage with their trauma. Grow up. If you don't want to know, don't look.