I think the biggest problem with these books is that people take them far to seriously. They need to be read at face value, for entertainment purposes, not as a preaching on how to live your life.
To go against the arguement that it "teaches that the most important thing in life is having a boyfriend. edward is a stalker. jacob sexually harrasses her. it encourages domestic violence as bella wakes up the day after the wedding covered in bruises. and something about how it has taken in so many people seems very off to me." These situations add to the drama of the books. They appall people but it keeps you reading. This is not an old technique, as authors are always writing about touchy subjects and how their characters choose to deal with them, is not necessarily the way the reader should deal with them.