The right to privacy is an element of various legal traditions to restrain governmental and private actions that threaten the privacy of individuals
Part of the problem is that information is available.
We often unknowingly willingly give pieces of information that may be widely disparate, but when something can string them together...well it can be startling.
A phone book was data that could be collected...you could have your name removed, but for many people that was outweighed by the advantages of having your name in it...
Same with the Internet.
So, you think marriage records, property purchases, etc., should all be private instead of available to the public? What about the phonebook (if anyone still uses those?) What records, precisely, are you trying to obscure, and why? MyLife didn’t do anything other than take aggregate info that’s already public.
“The right to privacy ...”
Can you define “The right to privacy”? Can you define “privacy”? Just so we all know what we’re talking about.
“various legal traditions”
“Various legal traditions” also restrict freedom of speech, the right to bear arms, the free exercise of religion and the rights of conscience, etc. The only “legal tradition” that is really worth a damn in this world anymore is the American one, and even that is skating on thin ice.