The response to the OP's question is that he is framing the question incorrectly. The most common mistake is that folks focus on the amount of income they need to retire. so called expert advise that you need to retain 70-80% of what you earn per year before you retire.
However, the critical part of this equation is what you remove from your budget that will comprise the 20-30% difference.
As o security concerns if you live in TV people of dubious intent already circled you as a potential client even if your not a member of TOTV. All it takes is a phone book. By the way if you are on Facebook, Twitter, etc they already know more about you than your spouse