"You believe that you fully understand the risks that you are exposed to, and how they are mitigated."
No, not at all.
I am, however, able to see lots of us flying every day, and how many of my mates have failed to come home over the years.
I do the maths, and decide that when you add up the known risks and the unknown risks that I am happy with my chances.
You do the same every day when you drive your car.
You know that it is a risk but you do it anyway.
More of my mates have died in car accidents than aircraft accidents.