My whole working philosophy is that the only stable happiness for mankind is that it shall live married in blessed union to woman-kind - intimacy, physical and psychical between a man and his wife. I wish to add that my state of bliss is by no means perfect.
The concern is over what will happen as strong encryption becomes commonplace with all digital communications and stored data. Right now the use of encryption isn't all that widespread, but that state of affairs is expected to change rapidly.
For me optimism is two lovers walking into the sunset arm in arm. Or maybe into the sunrise - whatever appeals to you.