Egregious Backstory Trauma

The leads in these dramas weren't just abandoned as kids. Oh, no. They've had it far worse. In fact, they've been so egregiously abused that their backstory stretches the limits of all reasonable belief. Bullying, assault, domestic abuse, parental neglect, illness, betrayal, attempted murder... you name it, it's probably happened to them.

I hate this trope honestly because I don't like main characters who are established as perfect, innocent victims of a cruel world full of cruel people. It leaves zero room for nuance. Characters can have suffered and been shaped by that suffering, but in order to make for an interesting story, they have to have their own flaws and grow from there.
Another reason I hate this trope is because sometimes it can be just an excuse to showcase violence against women in a gross and discomforting way. 

But just because a drama has egregious backstory trauma doesn't mean I can't like it for other reasons. This is one of those pet peeves that I can get over for the sake of an entertaining watch.