Well, I'm sure I wouldn't rather be killed by a suicide bomber who just decided to make the supreme sacrifice for his god right beside me than have my phone/internet use scooped up along with that of everyone else. Much prefer to stay alive, thanks. And just because no fanatic has yet committed such an atrocity in Australia does not mean there is not such an event being planned right now.
Our intelligence agencies have foiled several such schemes.
That's why I said personally Julia, I'm sure there are many like you who are happy to have their privacy and liberties eroded to feel safe at night but their are others like me that won't.
So our agencies have managed to foil several planned attacks which would indicate that the agencies already have enough information in their hands to prevent such attacks.