What makes the Canon in D major so beautiful?

Undoubtedly the most beautiful song ever written. Over three hundred years old and it is still able to make me wonder about every belief in my life. Why is this song so powerful? I am listening to it as I write this and my screen is blurring because my eyes are filling with tears. How is it that this song can keep me going for just one more day? Make me see just a small amount of beauty left in my life? If ever there were a real hope for the soul, contained within this piece of music it lies, unquestionably. In a world where there is so much hate it is amazing to me that such magnificent beauty can exist. So I ask you now, whats makes this song so wonderfully profound?