Divine Secrets of the Ya-Ya Sisterhood

I always get excited when I learn a book I'm reading has been turned into a movie (BTW, cannot WAIT for the new Harry Potter movie this summer), but I've found a lot of people don't like going to these movies with me.
 
I'm quite critical of the storylines and the character development. Maybe it's snobby, but I just think these movie makers should take more caution to protect the integrity of the storylines I love so much.