RK:
Very surprised at your post. A waste of Hashem’s time???? Even if someone were to daven 20 hours a day, it wouldn’t be a waste of Hashem’s time.
>> if one is petitioning a worldly king, mah sh’ein kayn, the King of the Universe, one should be as brief and to the point as possible.<<
Not if the wordly king was your father.
Not if you had a special relationship with this king.
And not if this king made it clear he loves spending time with you.
When you speak to your mother, do you just talk to her to make a request, and end the conversation? Imagine how she would feel if you did that?
And Hashem isn’t a human king/parent. He won’t get tired of hearing from us. It says if Hashem didn’t think about the world for one second, it would disappear. Hashem thinks about each and every one of us every nanosecond. He pays attention to our thoughts and actions every nanosecond. How can we be wasting His time if he is paying attention to us the entire time anyway?