Einstein said, "I want to know how God created this world. I want to know His thoughts..." [1] So, I think Einstein sought answers to such basic questions as: "Why don’t we have a universe of solely empty space, i.e., all nothingness, total ‘void’, with no matter nor energy in it, instead of our universe with some mass?" Finding good answers may seem impossible, but let’s creatively try to. Regarding the above question, for example, we note that the opposite of a ‘totally void universe’ is a ‘fully-filled universe’. But the ‘fully-filled’ option drags along with it, a huge load of other questions, possibilities, and problems to be worked out. Thus, perhaps those many other questions and issues, dragged along with it, is the main ‘reason’ why we have a universe with ’gross’ mass occupying only a very low fraction of all space, (i.e., only 10 to the power of -19 or less). But still, some fraction of space, indeed! So, below we formally present our analytic method, involving comparing different possibilities and their merits. And give examples of that. And we conclude, like Einstein, that "God did not ‘play dice’, so-to-speak, when ‘choosing our universe’."