Spiritual satisfaction requires deep contemplation of reality. Some people look inward to find that satisfaction, but science allows us to look outward. It has taken me decades to learn the physics, chemistry, biochemistry, biology, evolution, geology, and so many other components of science to reach a point of spiritual satisfaction. I can walk through the forest and feel the unity of reality. The color of the sky; the photons raining down; the leaves eagerly gobbling them up; the fluids slowly seeping upward inside the trees, carrying nutrients from the soil out to the furthest leaves; the chemical reactions in the leaves generating ATP, driven by DNA containing components shared in my own DNA; the insects flitting about and the birds sweeping through, snagging the insects; these too containing DNA that I share; the soil created by worms from rocks that emerged from deep, deep in the earth where they were forged by intense pressure and temperatures and metamorphosed from the igneous rocks released by volcanoes 250 million years ago; the warmth of the sunlight on my face, generated by thermonuclear reactions deep inside the sun a million years ago (yes, it takes a million years for a gamma ray released by a thermonuclear reaction to elbow its way through the immensely dense plasma of the sun to reach the surface and blast off for the earth); all these realizations and more make me contemplate the oneness I feel with the universe.
Some people see reality as nothing more than a random collection of things. I see it as a unified system of processes that fit together with infinite synergy.