I try to base my beliefs about our reality on what science and scientists tell us
Yes, because you believe as a matter of faith that science is qualified to make credible statements about the very largest of topics, such as are addressed by God claims.
Science is clearly qualified to speak to very many topics, but that does not automatically equal it being qualified to speak to any and all topics.
Holy books have brought comfort and meaning to billions of people over thousands of years, but that doesn't automatically equal holy books being qualified to make credible statements on the very largest of topics.
A proven ability in one arena does not automatically equal a proven ability in all arenas.
Yes, atheism is an option. Everyone should feel free to choose it. And if they want to pretend they are doing reason, ok, go for it. This is what most religious people do as well. They want to believe something, so they believe it, and by doing so they get some sense of knowing what's going on, which brings them comfort and stability. Atheists are surely entitled to do the same thing.
But the whole process on both sides is built upon fantasy knowing.