Is it wrong?

The Hallowed Hunt - Lois McMaster Bujold Amaryllis - Jayne Castle

Something must be wrong with me. I'm reading Lois McMaster Bujold's The Hallowed Hunt. The story is gripping. The world building is complex and fascinating. The characterization is superb. I like both protagonists: they are multidimensional and colorful. I root for them both. The tension is rising, and my adrenaline is pumping. Some mysteroius menace is looming over the heroes, threatening their lives...

And I can't read it anymore. Even though I know it will end well for them - I cheated and peeked into the ending - I can't force myself to continue the novel. At about 30% I stopped. I might continue it later, but for now, it feels too intense, too dark for me.

Do you know what I picked up to wipe off the darkness? Jayne Castle's Amaryllis. A fluffy futuristic romance I've already read two or three times. The world building is kind-a silly. The characters are, if not flat then not fully fleshed out. The plot is formulaic. The tension is artificial. And I'm relaxing and enjoying it. Literature it's not, but it's a nice reading interlude. I can stop at any time and start again at any time. My adrenaline is not pumping. I like the book.

What is wrong with me?