Of course G-d realizes that it is entirely possible we will have a painful reaction to the nisayon, because G-d understands that we are human. All I am saying is that we don’t have to have a painful reaction to these things if we were fully aware of the truth, and the reality, which is that it is for our good.
I haven’t seen that gemarah, but I’d assume that when it speaks of “good” and “bad”, it is speaking in terms of how people talk and think, which is a concept we find in many gemaros, and that when it says “bad”, it is referring to things that we would naturally, because of our initial emotions, view as bad. But again, those emotions blind us from the reality of everything REALLY being good.
I see that you won’t agree with my point, and that really does not bother me. Many people don’t. All I know is that my viewpoint greatly helps me move ahead in life, and I know that it has also helped others who are going through difficulties.