So you don't own a laptop, smartphone or tablet? How do you live your life peacefully while there are dozens of devices around you with internal microphones?
>>kowder+(OP)
You don't do business covered by serious NDAs on non EMSEC/COMSEC equipment. You do not talk about sensitive information in a wired room.
In your personal life just leave your microphoned laptops/phones in a box in the room next door.
Two birds, one stone: less time spent behind a screen unless you need it, and your tinfoil-hat friends feel safer!