We don't have to find the specific and correct historical process that led to life. All we have to do is demonstrate that natural processes are sufficient.
Just as we have demonstrated on earth the natural processes necessary to keep the sun supplying energy, even though we have never been to the sun.
Fusion on earth is "intelligently designed," but that does not prevent us from asserting it occurs without intervention on the sun.
You would look more intelligent and more honest if you spent a few minutes thinking things through before posting.
From this it is apparent your interest is not in scientific accuracy, but in supporting a naturalistic philosophy. Your advice about "thinking fist" would be better spent on yourself.