It is a strange phenomenon. Somehow, I am addicted to the books of the Dark Glass Series, even though a lot of things speak against it.
The style of writing consists of many repetitive phrases. Some of them are part of the concept of living the three different choices. Not every single thing changes, of course. But even then I doubt that people would choose the exact same wording. Variation and the playing with words is missing.
Additionally, the characters and the plot are constructed in a simplistic fashion as well. No depth, barely any surprising twists and turns.
One should think that the story must be quite boring indeed. For some reason it is not, at least not to me. Although I do advise not to read the three storylines one right after the other.
If you are looking for something to pass the time and to relax, that requires not too much thinking, and if you want to see what a difference one single choice can make, then this series might be the right choice for you.