With everything that is complex, we learn. If you don't learn, then it's an utter and abject failure. If you do learn, and you're able to apply that to the next situation, then you take away a measure of success.
Illogical thinkers throw names and slurs around because they have no arguments with which to rebut their opponents. Rational people have to keep hammering their points home.
You don't have to be a brain surgeon to be a valuable person. You become valuable because of the knowledge that you have. And that doesn't mean you won't fail sometimes. The important thing is to keep trying.
We should be concerned not only about the health of individual patients, but also the health of our entire society.