@r_alb I'll add the following:
1) It's none of their business. There is no reason why they should be entitled to know these things about me, especially when I don't know anything about them.
2) Good for you. But that doesn't mean that there aren't other people who have things to hide for very good reasons. And none of these reasons have something to do with breaking the law. And conversely, by protecting your personal data you are preventing others from abusing your data for committing crimes.