Exactly. If we didn't value access to sound, my family would not have considered a CI.
And, as Rampratt said, we take calculated risks every time we get out of bed. Strapping a 2 year old into a car is FAR more risky than opting for CI surgery, yet many of us decide to take that risk of a car accident every day for far less of an upside than CI surgery. We take precautions to mitigate those risks (carseat, seat belt, careful driving / meningitis vax, selecting great surgeons, keeping the incision clean).
But that's not to say there aren't very valid reasons why some people and some families decide NOT to get a CI. It's a very complex and personal choice.