All in Repetitive Prayer

As Christians we would like to think of ourselves as being mature in our faith, but sometimes we behave more like children by repeatedly asking the Lord “Why?”. When we don’t like what He has asked us to do, or don’t understand His reasoning, then we begin to ask “Why?” over and over again. If someone were to ask us whether we are trusting and obedient when God speaks to us, we would say yes, but our constant questioning of Him indicates otherwise. Do we behave in this manner?