Amanda Beth wrote:TNO,
I see some of your points and I know some people like to see reason in all decisions... but in this end this is just a fictional story and it doesn't really matter what makes sense or doesn't make sense.
You also keep saying "vampires can't have babies" They CANT have babies, females that is... no one said anything about the male side since before Edward and Bella it wasn't even fathomable to think a vampire could have that much self control. Not sure if this was posted but Stephenie explains herself: http://stepheniemeyer.com/bd_faq.html
First: Yes, it does matter that it makes sense! As I said before, I don't care if it doesn't make sense in terms of our world, with all our laws of nature, I don't care if it's something (like vampires) that would be simply impossible in this world. However, all stories- historical fiction, fantasy, science fiction, all of it- must make sense within themselves. Willing Suspension of Disbelief, remember? Randomly changing the rules- or even just using a new law that has never been even hinted at before to make a plot point (i.e, Wicked the Musical's sudden, "oh, Elphaba was so powerful because she was a halfling!" at the end, even though no evidence had previously been given to suggest halflings are more powerful than normal people) can destroy Willing Suspension of Disbelief. If a story has no continuity, if it continuously breaks the fourth wall, it becomes, well, ridiculous. Python-esque. Twilight isn't a crack series, so it should have continuity, and be internally realistic (that is, follow its own rules).
Second: Well, yes, I know that. In BD it suddenly becomes "female vamps can't have babies, but males can!" (which is really quite sexist, you know). However, in Twilight-NM-Eclipse (Eclipse especially if I remember correctly), Edward basically beats Bella over the head with "vampires can't have babies- period." There's no mention of male vampires being able to have babies with humans until BD. The implication being, vampires can't have babies- but oh wait the guys can! It's a lack of continuity issue. If Dhampirs exist in Twilight land, it should be mentioned- even in passing- before the final book when the protagonist has one rip its way out of her abdomen. If Ed had said something like, "Bella, once you're a vampire you won't be able to have children, because even though male vampires can fertilize human eggs, female vampires are unable to change and therefore unable to carry a developing fetus" and left it at that, I wouldn't have a problem with Renesmee's existence. Does that make sense?