People who take the security of their business seriously will use encryption. It has always been that way, for professionals of all kinds. And even criminals. We do not freak out about the fact that criminals can use, say, curtains in their private homes. If a senior policeman were to lecture the public on the threat posed by curtains because of their possible use by criminals, there would be ridicule. But because encryption is associated with new technology, police are taken seriously when they lecture us about the threat posed by encryption.
Encryption is the curtains of the Internet age. If there's no reason for the police to have an unrestricted view of the inside of everyone's home, there's no need for them to have an unrestricted view of the contents of your secret messages either.