How often do we wrestle with understanding in situations where there are only half answers, at best? Perhaps the reason that God does not always give us understanding on demand is so that we can choose Him by faith rather than resting and relying on our own understanding in our own strength.
Seeking to question something is a valid activity, and sometimes answers are granted to us, but the question is where ultimately do we put our faith? Do we put our faith and trust in God whether we understand or not? Or is our faith in our own understanding?
The problem with the latter is that it is not a reliable place to stand – we see only as if through a glass, and that dimly. So I perceive that God sometimes (you may say often) does not answer the questions so that our trust may reside, often through struggle, in a place that will never be shaken.