Nature Hates A Gradient

Mother Nature must always deal with a gradient. She can't stand to have one. A temperature difference will be dealt with by heat flowing from a hot end of a rod to the cold end. A high pressure area will do what it can to travel to a low pressure area. The same applies to energy levels, voltage, or any other natural phenomenon. This being said, I am wondering if the advent of life on this globe was inevitable and not a random event at all. Perhaps DNA is so logical it would have to happen on other worlds that are presented with the same forces that this planet faces. This is just a thought and I wonder if this thinking is addressed anywhere out there.