Your home is not a public place.
But it's easier for me to listen in at your window than to listen in on the Southern Cross cable. Which one is more private?
My point is you can expect a certain level of privacy at home.
The same can't be said about any public place.
Which one is more private? The data when inside the southern cross cable sure. But thats only because there is a huge mass of water protecting it. The southerncross cable is not the internet. The internet is hundreds and thousands of computers, routers, cables all linking together, (all totally out of your control) you have no control of how that data flows. Some of your data may flow via china without your knowledge, some via Nigeria. (IP traffic sometimes just takes the shortest path). Are you confident nobody is snooping on any of it? Its ridiculous for you to even assume that your info is private when it is already open to an infinite amount of vulnerabilities.
Your ISP won't guarantee your privacy. You dont pay for internet privacy. Why do you assume your data is safe when it flows through its routers? Why do you assume your emails are not vulnerable once they leave your PC? Or gmails servers? Or while they are stored on the gmail servers?
Why do people not use public wifi for their banking etc ??? Why do people worry about stuff like this? Is there such a difference between using a public wifi or somebody just snooping on your data anyway further down on the internet?? The threats are already there that's why. People have built big businesses on online security. Its silly to just assume your online activity is private.