A fair God?

One way to understand god, if he is a fair power, is to look at science. I am no science guy, but I do know that everything must exist in pairs; negative-positive, matter-anti matter, or male and female, North and South. In fact, when spermatozoas race to the egg, it could simply be electrons and protons driving them. Even to move, we need two points, from x to y. Otherwise, it becomes virtually impossible to move. Does that make sense enough?
Let us take the most simple pair I know that most simple people can understand...'patience'. The only way you know how patient you are is by seeing how you react to challenges that test you, that only pure and solid good old patience can let you overcome the stress. When you are in pain or been long waiting, or when you are angered and humiliated, or when hunger strikes you that you can almost pass out; those are the times you can assess how much brutal patience you can muster, whether you have it or not.
So it is, if we ask anybody in this world, what kind of life we all want to live in? We get the same answer, basically the same kind of world; in peace and harmony, having enough and a little bit more than enough (so that we can celebrate when we are happy), having enough opportunities and jobs to do, and most importantly, with love, dignity and honor. Guess what, all those beautiful, ideal aspects of life, they are all paired all snug and fit too. That is the only way they can have the all desired life values. And we will need to fight for them, strive to attain then, and most probably not without sacrifice.
Why is this relevant? This world is a kingdom of cause and effect, substantially, and of reason and rationality. How can we benefit from this simple review of naturally occurring but often forgotten fact of things always in pairs? So we can see the matrix of eventual protocol of physical experience, so we can maintain composure in the face of adversities and harsh realities of life.
Finally, we will not judge too quickly, and are able to see that the pair is needed. Maybe one day we will be able to bless the difficulties and troubles in this life, and that way we will rise a little higher in our consciousness, and achieve our purpose in this world, which is ultimately to see eye to eye with god, if we believe in him.