have a look here....
If you don't want to take the risk of surgery, then:
Why would you get in your car, you could die!
Why would you get on a plane, you could die!
Why would you cross the road, you could die!
etc, etc.....
Life comes with risks. And the chances of getting killed by a drunk driver smashing her car into yours is probably bigger than dying due to a CI operation.
So if you do not want CI because of the possibility of dying on the operation table, you should not get into a car, a plane.... You might get killed!