Because a designer behind the sophisticated & complex is all that we have ever seen. Why admit this for words on a beach or stones carved into shapes but not in genetic? Why believe we came from rocks?
Be honest you're looking for evidence as hard as a thief looks for a cop. I agree design is obvious when one sees it but you are choosing to reject it but know it true. this sophisticated and complex thing isn't design it only appears that way because the implications of the fact of design are something many do not want to accept, see, or think about. You didn't come from a rock you came from a mind.
Is it to hard for you to understand sophisticated and complex machines only come from a mind? You see the sophisticated complexity of Mount Rushmore but would laugh at anyone who would suggest it was carved through natural processes. Seeing the vast quantities of complex specific information in even the simplest self-reproducing organism tells us a mind was involved. Software doesn't create itself.
There’s a stark difference between things obviously being the product of human meddling, and the inference that something supernatural and transient produced something instead. There is evidence of humans and zero of the supernatural.
DNA tells us abiogenesis was involved. And while complex, if the human genome were converted to binary code, Windows XP would still be twice as large.
Your evolutionary beliefs says that rocks got rained on & minerals formed the first life. Rocks are fundamental to your beliefs but You will call it lies & think scientist wouldn't say something so stupid but you will choose to believe this nonsense if it means rejecting the obvious, sophisticated and complex machines only come from a mind.
Just google: Genesis Rocks Minerals & The Geochemical Origin Of Life https://hazen.carnegiescience.edu/sites/hazen.gl.ciw.edu/files/ElementsIntro.pdf
This says you owe your life to a rock
This says rocks beget life