Read this if you’ve got nothing to hide:

If someone says they have nothing to hide, ask them to unlock their phone and give it to you for ten minutes. If they hesitate they will have realized it’s nice to keep some things to yourself.

Many of us (including myself) have been far to permissive in the value we give away with our personal data.

The article above has four good arguments for taking privacy seriously even if you think you have nothing to hide.