Certainly no sentient life forms would have, as yet, had the opportunity to evolve in this system. Though, perhaps, the first bio-chemical life forms have already arisen. Who knows? (I suspect, however, that it may be too early for that.)
But, if life has arisen without God does this disprove God? No, it does not. Just because life can arise without God does not mean there is no God. Even Richard Dawkins would acknowledge that. I think, if you look into it, you will find that many Christians become atheists for reasons that have little to do with science.
I am reading a book titled
Caught in the Pulpit, written by Dan Dennett and Linda Lascola. It interviews about 50 ministers who have become either agnostic or atheistic. The interviewees are all members of
The Clergy Project (which has some 600 members). Most of these individuals are still in the pulpit, though a few of them have left it behind. I am about half way through the book, but so far not a single individual has cited science as the cause of their loss of faith. You might find it interesting reading.
"The Clergy Project is a confidential online community for current and former religious leaders in vocational ministry who do not hold supernatural beliefs and are struggling with issues.
Launched on March 21st, 2011, it's a safe haven where members can freely discuss the challenges they face on a daily basis being in ministry or on leaving ministry and establishing a new life.
Currently, the community's 600+ Forum Participants rely on each other for support, networking, and discussion about the challenges they face as current or former religious leaders." Clergy Project
Note, in order to post on this site one must be a practicing, or former, member of the clergy, although their testimonials are available for anyone to read.