There already are, and there will no doubt be even more, reviews of BREAKING DAWN so I will offer just a few thoughts.
The TWILIGHT saga was a fun ride. It brought more than the usual drama, romance, and adventure to the vampire genre. It made serious readers out of many reluctant teens and young adults. I say serious readers because picking up not one, but four volumes the size of the TWILIGHT books is digging into some serious wordage. It attracted the attention of adults wanting to know what the excitement was all about, and it made many of them fans as well. It brought another "regular" person into author fame. Stephenie Meyer stayed humble and genuine despite her rapid rise to fame.
As a reader and lover of realistic fiction, I found enough in the series to carry me to the bookstore to purchase each additional book. BREAKING DAWN satisfied me in the end. After the time invested in reading Bella's tale, I'm certainly glad there was a "happily ever after" conclusion. Meyer's brand of vampire deserves respect and the right to a peaceful existence in the world. Overall, I'm glad I read the series, and I'm glad it is out there for others to enjoy.