So since we cannot test, observe, or repeat the craters on the moon, then you refuse to believe they were caused by meteor strikes?
We have evidence left of past meteor strikes on earth, and that is "scientific" enough for any reasonable person to conclude that such craters are caused by them. That, and Occam's razor makes the same explanation for moon craters the "best" explanation as well.
Likewise, we have massive amounts of evidence for evolution in the form of fossils, DNA, and observations about the strata they are found in. That information and occam's razor makes evolution the "best" explanation for how species developed.
None of that precludes God, or a "purpose" for the world. That's philosophy and faith, and need not conflict with science one bit.