School District, New Homes, Proximity to engineering and biotech jobs in the triangle. If you want a the first of those two items (or at least a home built in the past 7 years) you are limited to CV or else your next stop Torrey Highlands, then all the development off Camino Del Sur up to 4S.
While CV is not sdrealtors or cowboys choice, (nor is it my choice either) it is a desired destination for many folks, especially younger families.
(Actually I like a slice of the older developments in Del Mar Highlands but that is about it for me)