I bought and read the book due to:
2. Many people favorable reviews
While the book does not sucks, it does not leave me clutching at my side holding my stomach from laughter. Most of the times I am just 'meh'. It got some pretty amusing moments and some of the ending for the characters end more satisfactorily than the original book. Also I found Elizabeth as annoying and wishing she would just shut up which I never thought of in the original book; as haughty as she was.
Perhaps my expectation was high due to many favorable reviews or maybe my funny bone just work differently but I can't help thinking that people are loving this because it spins something new ( there are now countless other reimagining of classic and monsters) but I can't seem to muster a laugh or interest in this particular reimaginings plot.