In recent years significant progress has been made in solving the question of how life originated on our planet.
How do you think theists will respond when it finally happens? As a former christian I know my reaction would have been something like "well that just goes to show that it takes intelligent life to make life", but for two reasons that defense doesn't work.
Firstly it would prove that life is not an ethereal force that originates with god. There is no 'ghost in the machine', no elan vital.
Also the excuse doesn't work because origin-of-life researchers are simply working to recreate the conditions that existed in a prebiotic earth to observe how life arose without intelligent agency.
"Life is nothing but an electron looking for a place to rest" - Albert Szent-Györgyi.