Is there an setting/era that you avoid in books?

For me, it's WWII.  And I can't explain that because I love all things 40's: the music, the houses, the clothes and my favorite movie star, Fred Astaire. But I hate to read any book set in WWII because I hate thinking how awful humans can be to one another. I don't need that reminder. I have the ID Channel for that. 

So that being said, I finally read "The Nightingale" by Kristin Hannah. A lot of people recommended it to me, and I didn't actually know it was a WWII book before I started it.  By then, I'd already spent my hard-earned cash, so I was going to read it. This book is older (2015) and this is my first Kristin Hannah book.  Okay, for real, all the things I said about WWII hold true here. I hate that German engineer/physics types invade this artsy little country who just want to eat, drink and be merry. (I'm part German too with no French in me, but I do not get the lust for power. What a waste of time.)

This is the story of two French sisters and their experiences as the Nazi's enter France. While I would normally avoid this subject like the plague, this was a truly amazing novel. It forces you to ask yourself who would I be in a situation of survival and resistance? Hannah makes it very clear the characters have very little choice in what is going on around them, and they're weakened by a lack of food and resources. We'd all want to do the right thing, but it's clear how sometimes in life, the choice between right/wrong is not easy. 

I'm glad I pressed through my own resistance to this book because I thought it offered one of the best endings of any novel I've ever read. The ending was thorough. It answered all my questions, and it left me satisfied. I cheered/ached for people who aren't real.  So I must say, well done to Kristin Hannah (not that I think this bestselling author needs my approval.)

My question for you, is there a setting/era that you avoid?  Has any book ever overcome your resistance?