There is no such thing as a “scientific” worldview. An atheist may argue that his/her positions are scientific and objective, since they are an extrapolation from what science tells us about the world. This, however, overlooks the fact that this extrapolation, while it may claim to be based on science, is a philosophical extrapolation, not a scientific one, since it transcends the realm of strictly scientific knowledge. The atheist’s position is no less philosophical than the theist’s position.
You may say, well, science shows that the natural world all develops by itself, via physical, chemical and biological evolution since the Big Bang. I happen to agree with you. But science proper can simply not make a distinction between the two scenarios:
a) not just everything that happens within the natural world has natural causes, but also nature itself (our universe) has been created by natural causes
b) nature develops on its own because God made it so
a) is just as much philosophy as b), since it is a philosophical extrapolation from science, not a scientific statement.
I say all this as a scientist (a biochemist) who has written a review of the research on the origin of life by natural causes (a highly likely event) for
Talkorigins.org, a leading evolution website:
talkorigins.org/faqs/abioprob/originoflife.html
I love science, but I also insist on getting philosophy right and the borders between science and philosophy. Again, there is no such thing as a “scientific” worldview.