Am I being overly protective of me and my own?

The more I date the more I realize, I am very protective of me and my space.
I have an online dating profile with a neighboring town (within 7 miles of me) as my hometown listed. When dating I don't EVER mention my boys names or what they do, nor do I give anyone my last name.
Is this wrong? Am I being overly protective of me and my space?