Why is Bush buying a home in a gated community with private security instead of returning to his ranch?

As President of the United States, any person becomes a potential victim of the enemies (political and otherwise). This is inevitable and it does not matter how popular they were nor now well they did the job. Perhaps it will be easier to provide security/protection for him in a gated community than at his ranch.
Or, it is also possible that he and his family have simply grown tired of ranch-living and just want to try living nearer the big city for a while.