They do read it
" but monitoring transmissions across the public internet"
Internet *websites* are public, internet *browsing* is private - it's between you and the website. That's a wordplay you did there.
A TV channel is public, me at home watching the channel is private.
"NSA, CESG, and all the rest might well collect data, but they do not read it all, by any means"
So you accept they *do* read your email, and email is a private conversation usually between me and my kids and is none of your business.
"If you don't want you eMail or data read, then don't use the internet."
The rules say, you have suspicion, you get a warrant, a judge says "yep", and you get to spy on someone. That's constitutionally protected.
What you've changed that into is this: you get a warrant to spy on *everyone* for *everything* on suspicion of *nothing*. You collect all of that data into a giant database under the control of a military leader (the man in charge of Abu Graib prison no less). He then data-mines with new filters depending on what his agenda of the day is. Without a warrant, at his whim.
He also lies to Congress about it, because its so out of legal bounds as to be illegal.
There's are also 97 billion/month unexplained records not covered by FISA or FISC courts so he's even outside the current disclosed data. Phone meta comes under FISA, so that's an extra 97 billion not covered.
3 billion of those are US, so any claim they don't *wittingly* spy on USA is contradicted by their map coverage showing extensive data known to be USA.
If you don't want to stick within the law, then go live in Egypt and join the military dictatorship that just took over there. You have no place in a democracy.