Good lucky trying to do that thru Someone using optical to output to your speakers/headphones.
Which most people don't have or use, unlike the classic audio jack.
Keeping this amount of data is not free, nor easy to organize.
Not free to keep, true. Not easy to organize, false. We've got databases for a reason.
SELECT address FROM data WHERE name='John Doe';
Also, who cares if it's not free to keep, as long as you can sell these to any interested 3rd party?
How do you think Google became this huge, when all they did was host a free-of-charge search engine? They collected your search history and used it to show you personalized ads, for which other companies gladly payed a fortune.
You remember those CSI chapters where they lose some evidence cus they got too many evidences in the evidence room?
I don't watch CSI, but I still remember that job interview from Google, where they asked all sorts of questions they couldn't have asked unless they had collected a ton of data. It was creepy as hell.
They certainly hadn't lost any evidence, nor did they have any trouble finding exactly the right one about the person they were interviewing.
Also, don't believe in everything you see on TV, especially not if it's entertainment. According to most US police shows out there, the police won't shoot criminals that are trying to flee, even though they were told at gunpoint not to move. In reality, they'd be shot to death.
Hell, even the brain has an automatic method to delete non-critical data to not over saturate.
Because the brain can't grow indefinitely, nor can it shrink its cells or replace them either.
You need more storage space? Just add another disk. You've got too many disks? Buy a newer, denser disk, transfer all the data, and replace the old disks with the new one. Rinse & repeat.