They have done this (or tried to)

They made some primordial "goop" that they theorised were similar to conditions on primordial earth. They then ran thousands of volts of electricity through it at intervals and found some organic chemical compounds had been made that were minor building blocks for life...

But what does that say? Maybe their goop was wrong. Maybe it's easy to make building blocks but what does it take to make the first strand of RNA?

Science is all about repeatable experiments sure, but what we know about early life on earth is pretty limited - hard to recreate a meaningful experiment. Another problem, of course, is who is to say that how things are here is the only way life can exist?

All in all it isnt really an area we can discuss scientifically in my opinion (at least with our current understanding of the universe and its laws)