Abbey, where do you get your information? It seems like you’re making naive generalizations (everyone in CA has guns) and you’re spending a lot of time listening to cold-calling salesmen (RE agent). I get the feeling that after reading everyone’s advice here you’re gonna get an overpriced house and a gun.
The area you choose do live in depends on many things. San Diego is a LARGE county so you can’t just pick Rancho Bernardo or Mira Mesa. There’s a lot to consider, like schools, work, traffic, shopping, etc. it really depends on what you want. You can’t make generalizations, and lumping all the areas of San Diego together is one. Tell us where you’ll be working, what your price range is, etc. then you can get some real advice. Right now you’re just trolling.