There is nothing in God's Word that indicates we will understand or know "why" in this life.
I have never seen a Brother or Sister writhe over the "why" of a pleasant blessing. I have often wept with and prayed with those who are stuck in the quicksand of needing an answer to the "why" question during times of a blessing that is painful.
Can He be trusted? Have you ever found Him to be passive or elusive?
Soldier of The Cross, your job is to live each day in obedience to His Word. This is not limited to the best of your ability, because you have the Indwelling Holy Spirit.
Waiting for God to justify Himself sets one's face toward the past, stokes resentment about the situation, and it also presumes one has the capacity to understand the way God does.
The Plan does not involve our being satisfied the reasons. The Plan is that we take up The Cross and follow after Him.
This happens in prayer. Agree with God.
Today.
Aloud.