Im sorry but you clearly haven't done any real reading into the theory itself if your post here is seriously how you view this topic. First off life couldn't exist without the universe first existing. The big bang, we'll just keep calling it this for simplistic reasons, is the cause of the universe. Life at least on our planet, didn't come into existence til billions of years after the big bang event took place. Life has nothing to do with the big bang, again they are two completely unrelated separate things.
Life didn't just popup out of nothing, as localoid provided some basic reading material on abiogenesis that should help you understand, that is as long as you actually read it. Saying the big bang would have wiped out the universe is putting the cart before the horse. So I have to say this again, life did not exist before the big bang, therefore it could not wipe out something that didn't even exist yet.
The Earth existing is a result of the creation of our solar system, again a process that took place a few billion years after the big bang. Earth is a double edge sword in terms of life. Earth's placement in the solar system is in what is called the
goldilocks zone or habitable zone. To close to the sun and the planet would burn, the water and atmosphere would burn off. If it was to far away from the sun, the planet would freeze. But even Earth being in that right zone, still is far from perfect for life. Some life can survive in one part of the planet but not another part. Even for us humans, we learned to adapt to parts of the planet there were not hospitable for our type of life. For example, for us to live in colder climates, we had to adapt not only our own bodies but our clothes and shelters to survive the extreme environments. That goes for any extreme environment on the planet which humans and other life live. We conformed to the planet, though we have learned to conform the planet to our needs in many aspects.
Since our technology has increased over the last 40 yrs, we have begun to find other planets in other solar systems. Some of these planets are within that goldilocks zone of their own systems. Given what we know how life exists, there is a strong possibility of finding life in the future on those other planets. We just have to wait for the technology to get up to par to find them. You were born in a time of human history that could find out that we are not alone but that life is practically everywhere in the universe.
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Sorry but I don't believe that you're actually doing any reading of the material being offered to you. It's one thing if you don't understand the material but to jump from a rock to a dog over X period of time goes to show you're not actually paying attention.
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I honestly think he's just not ready and willing to put effort into educating himself on these subjects.