As with most things, pain needs time and perspective to understand better.
Rationality is of little use in the moment though.
For who wants to argue philosophy when they are struggling to simply make it through the day?
At least, I hope so.
Tim Keller puts it very well: With time and perspective most of us can see good reasons for at least some of the tragedy and pain that occurs in life. Why couldn’t it be possible that, from God’s vantage point, there are good reasons for all of them? If you have a God great and transcendent enough to be mad at because he hasn’t stopped evil and suffering in the world, then you have (at the same moment) a God great and transcendent enough to have good reasons for allowing it to continue that you can’t know. Indeed, you can’t have it both ways.
-Ravi Zacharias and Vince Vitale, Why Suffering?