No privacy considerations there, lmao. "Just feed your entire personal life into this black box that may keep it forever!" What could possibly go wrong?

Just keep a diary, bro. Nobody is going to ask themselves your example questions, in real life.

When did I graduate? Pretty sure people know this answer. Did I like the experience? Do you have dementia? You know if you liked it.

Why did I break up with X? Pretty sure you remember why. Did I contact her again? Why do you want to know this?

What did I eat on some random date? Who cares? Is this really worth literally giving a machine outside of your direct control (or understanding) access to this data, forever into the future?

Seems silly and only borderline useful. Not worth the tradeoffs you would be making.