If you have a human assistant who does that job, he also listens 100% of the time.

But he or she is less vulnerable to being automatically hacked by a three letter agency, foreign government, and/or hacker gathering data for identity theft.

The privacy concern _isn't_ necessarily about having something to hide. It's about the consistent hacking of major systems, and exposure of personal data.

And you don't think there are privacy concerns with that? It is a /very/ intimate relationship, and generally requires some ritualized/formalized interaction, and a very high degree of trust.