I'm not sure I understand your complaint. What I'm arguing is that there is an interest in privacy and thus in the 4th and 5th amendments, as you mentioned.
Why do you feel you can't post here?
Discussion
I post anything that I deem appropriate but may not be appropriate to my employer or direct family. They have different opinions and want me to conform to their way of being. I should be allowed to have a space online away from my employer and mom/dad, as I do in real life when I hang out with my friends.