When you ask the question 'Why?' - whether personal ("Why did I miss the bus?") or global ("Why does the Universe exist?") - it may be that you have felt that your job is to find the one true answer; and having found the one true answer some sort of peace would reign within you.
But maybe another approach can be more helpful to you. Maybe there is never one true answer, but many answers all of which offer you a portion of the truth. Possibly even some answers could contradict each other and still offer valuable and true insights.
How can this be? Maybe your yourselves are the answer. That is to say, the question 'why?' is answered through you coming to know yourself more and more deeply, and this is a journey with many stages. And when you do come to the one true answer, all need to ask the question has been left far behind.