If it's so easy to use that people will actually _use_ strong encryption (end2end - who cares if there are central servers passing on the encrypted data) then yes - why not?
I fully agree with Moxie - and I'm hoping to get a lot of people to move from Skype to Wire. It might only be end2end encrypted for voice calls - not the text/group chats - but it's a lot _better_ than the alternatives, with a UI that has a chance of getting wide adoption.
More of the world's communication will be secured. That's progress.