I think it depends on what kind of story you’re writing. Obviously if you’re writing about the premades, it might be easier to work with their neighbourhood and the way it’s set up. The only premade neighbourhood I use is Bluewater Village and I don’t think it’s made any difference with how I made my story.
In saying that, I think there’s something to be said about creating your own neighbourhood and scenery from scratch. I like that level of control, and building all that from scratch could be extremely rewarding.