[quote=Ellri]
the so-called "twi-haters" were even more fanatic than the "twi-hards".[/quote]

Just like Justin Bieber, High School Musical and Fifty Shades of Grey, I've never actually met anybody that liked Twilight, but probably a city's worth of people that proclaim to hate it and seen a total lifetime's worth of faddy, lazy comedy material poking fun at their expense.
It does make me wonder why people don't just read the books, watch the films and listen to the music they like, instead of presumably sitting down to suffer.

Anyway, back on topic: the debate also depends on the vampire's role in the story. A single enigmatic vampire is [url=http://tvtropes.org/pmwiki/pmwiki.php/Main/ConservationOfNinjutsu]going to be very powerful[/url], while, if they are commonplace, they will be weaker, especially where they are antagonistic by default. A city full of hard-to-kill super-powered human-turning vampires that are the enemy will overthrow the world in days unless they have some super-crippling kryptonite. 

Another thought on breeding: how to manage the population. A vampire's food source (humans) is the same as its breeding opportunity (humans), and so, clearly, there is something of a conflict of interest here. In my [url=http://www.roleplayerguild.com/topics/54379/posts/ooc?page=1#post-1664429]current RP[/url], the western world has by-and-large accepted vampires. Here, vampires don't even have any meaningful opposition, and so, in order for their population not to completely overthrow that of the humans, they are legally (and internally) obliged not to breed. In my RP, this is done through the intentionally bunged-up licence system, where a vampire must basically file for an application to turn somebody, if they want a progeny.