Your premise works only if there is indeed billions and trillions of years(equivalent) of time. Reduce that variable to say, 100k, and your logical argument falls to pieces. Just saying, like evolution on Earth, all this ET life out there stuff hinges on an assumption based only on one virue, the “God” of time.
The same could be said about your opinion, it’s probably a question that will not be solved in my lifetime, perhaps not in a 1000 years from now.