why laws of nature really exist?
As far as I know, we don't know WHY they exist. We have enough to do to find out what these laws are.
From a religious point of view, you might say it is God's will.
Here is a little more to think about.
http://drdavespsychologypage.intuitwebsites.com/Proving_a_Point.pdf
The laws of nature exist because they help us understand and make sense of the world around us. They describe the regularities and patterns that we observe in the natural world, such as the way objects move, the behavior of energy and matter, and the interactions between different phenomena.
The existence of laws of nature can be explained by considering two important factors: observation and predictability.
Firstly, laws of nature are derived from careful and systematic observations of the world. Scientists and researchers observe the behavior of various phenomena, carry out experiments, and collect data to understand how things work. Through these observations, they uncover patterns and regularities that can be described by laws.
Secondly, laws of nature are also necessary for predictability. By understanding the underlying laws, we can make predictions about future events or phenomena. For example, the laws of gravity help us predict the motion of celestial bodies, while the laws of thermodynamics help us understand and control energy transfer. These predictions allow us to make informed decisions, develop technologies, and solve practical problems.
To identify and formulate laws of nature, scientists use the scientific method. This involves making observations, formulating hypotheses, conducting experiments, analyzing data, and revising or expanding existing theories based on new evidence. This iterative process helps refine our understanding of the natural world and leads to the discovery or refinement of laws.
It's important to note that while laws of nature describe the regularities we observe, they do not explain why these regularities exist in the first place. The ultimate question of why the laws exist is a philosophical one that goes beyond the scope of scientific inquiry. Science aims to describe and understand the natural world, while the question of why these laws exist may delve into metaphysical or philosophical realms.