Owning a firearm, regardless of your reasons for owning it, is a major responsibility. It’s not a decision that you can make lightly or on a whim.
Nowhere in the United States is going to be truly safe from a disaster on a grand scale. However, some states will certainly be less safe than others.
Your guns need to be well hidden so children and guests can’t find them, but they also need to be easily accessible in case of emergency.