People, it's fine to have things to hide. You can write a blog post and admit you have things to hide. Everyone has things to hide.
For one thing, you can care about hiding the private information that friends have shared with you. Nobody should assume that all their friends and contacts will be super happy about having some stranger at a border paw through their private emails, chats, and photos. Yes, you do have things to hide. It's called basic human privacy.
Please stop saying "I have nothing to hide" unless you're some sort of sociopath who is willing to give up the private addresses, emails, phone numbers, and details of all your friends, family members, and contacts.