Talk about strange thinking. The conditions have been fairly well established by scientists. It is those that are used. Physical laws are presumed to be stable and apply throughout the universe and throughout time. You can conceive of any conditions you like for early earth sans life. You still can't make life.
As I say, some of us were there. Nevermind that there is controversy about such basic things as the origin of the moon, and nevermind that we are just beginning to study deep earth life forms: eyewitness testimony trumps science.
And yes, we still can't make life. And fifty-five years ago we couldn't modify the genome. What's your point?