So, anyway, there is no requirement of science to test every possible idea. A person may choose to go that route, but it is certainly not part of the scientific method.
So Viviane, in Turkey there are these ancient ruins that have been uncovered, the Gobekli Tepe. Now why is it people are assuming that humans made them? Why aren't scientists coming up with theories on how natural processes made it? A bunch of earthquakes and things could have caused the stones to get carved up, and then landshift and earthquakes cause them to get filled up and buried, etc.
Anyway, how life first began, that is life on this planet, looking into intelligent life vs random as part of all possibilities then your claim that then one must look at a rhino made of pigs is a ridiculous comparison. One would consider the possiblity where any sort of intelligent life is responsible for life on this planet, whether biological alien scientists, God, a rhino of pigs, etc. Before specifics of how many broad possibilities for how life began. 1. Random from chemicals and conditions of 3.5 billion years ago and it all began on this planet. 2. Remnants from another planet/world/solar system/galaxy (water) got to this planet and started the cycle. 3. Biological intelligent life started it. 4. Life that is not biological or beyond what we know began it. etc.etc.
Anyway the scientific process doesn't mean that all hypothesis that life originates on this planet and by random chance and that is the only possibility that is considered and investigated. If that is what you believe then your as close minded as you were when you were a JW.