Even a tiny fraction of the planets in this galaxy is a gigantic number. Saying that the conditions for life can not be duplicated is pure speculation. I think that life must exist other places in the universe because There is never only one of any KIND of thing. By the nature of the Universe there must be other life bearing planets. For There to be only one in this unimaginably large universe would be like there only being one raindrop, tree, solar system or grain of sand. Try to think of any fundamental concept such as planet, cloud, rainbow or ice crystal with only one concrete example. Of course Earth is the only example of “life bearing planet” that we know of now but we have not been to any other solar systems yet to check and I suspect, again based on my observation of the nature of the universe, that when we do venture out to the stars we will find life is as common as raindrops here on earth.
You’re wrong. Read “Privileged Planet” and then report back here and eat crow....