I think people like it because it was seminal, and just about every other pop psychology book references it. That said, the material is better presented elsewhere. A great book that I enjoyed is: http://www.amazon.com/Makes-Brain-Happy-Should-Opposite/dp/1...
I haven't finished it, but not because it's boring. It's one of those books where I feel I have to start over reading more carefully after a few chapters. Unfortunately that makes it likely to be procrastinated away.
I'm determined to finish it this year, though.
Perhaps a better starting point would be the books of Dan Ariely, in terms of readability.
I've not read it yet, but have read Heuristics and Biases, which is Kahneman and Tverskys original research on the topic. It is very long and sorta dry, but incredibly useful. I'd also suggest reading the LessWrong sequences on rationality, as they are aimed at actually helping you be able to change your mind.
I only got a third of the way through it. It is interesting, but not really well written. There is no overarching narrative -- it's basically a collection of dry snippets. But the ideas are fascinating. I have every intention of finishing it.
It is probably not the greatest in terms of writing style, but : I read it in January 2013, and it is by far the most memorable book I've read the whole year. I still think back to it, whereas I couldn't tell you what I read in August.
