DNA certainly contains a lot more information that we are capable of understanding. Just mapping it is not enough. Compared to a computer program, it is also the worst spaghetti code imaginable, and in the lowest-level language possible (except for binary). Maybe we can decompile very tiny pieces of it at a time, but then we can’t be sure if something in it depends on a completely different part of the code.
Evolution, the theory, makes sense to me as far as adaption and speciation, but I don’t think it fully explains us humans. According to the theory, evolution endows a species only with what it needs to survive, and anything else is by random change. That doesn’t explain how we are able to understand advanced mathematics, build computers, and go to the moon, however. That ability given to us just by chance seems very unlikely.
The space within and between solar systems was quite warm and capable of supporting liquid water.
There might not have been enough time during this period for intelligent lifeforms to develop, but a large stew of amino acids and other building blocks of life could have developed during this period.
Those building blocks could have hopped rides on meteorites and asteroids which eventually bombarded the Earth providing it with water and the beginnings of life.
Crick was on LSD when he “discovered” the DNA helix.