Why private · 2 of 3

Data doesn't expire.

A password takes a minute to change. The rest of your identity is far harder to replace.

Now

The model can be talked into it.

AI cannot reliably tell your data from an attacker's instructions.
Security researchers rank prompt injection the #1 risk for AI applications.
An AI system with access to your file can be tricked by hidden instructions into revealing it.

Later

Encrypted data is being collected today on the bet that future computers can unlock it.
Security agencies call it “harvest now, decrypt later.”
The U.S. has published quantum-resistant standards, with a proposed timeline to retire today's by 2035.

The only file that can't leak from someone else's AI is the file that never went in.