Your experience is essentially meaningless, if you cannot grasp basic biology and basic methodology on how theory is refuted or verified...and they can only be verified or refuted through observation; observation as in tests/experiments, or in evidences. The test-evidence require it to be measurable or quantifiable.
You clearly don't know what a "scientific theory", because otherwise you would say something so ignorant.
A scientific theory is supposed to explain any natural or even man-made phenomena, explaining the facts.
A scientific theory is the accepted explanation, because they have been well-tested and well-substantiated, through successful repeated testings or through empirical evidences.
Without the evidences or test results, then evolution would have been false a long time ago. Instead, the theory of evolution is even more substantiated than the theory of gravity, because there are more evidences to support that it is true.
Creationism is not a fact and not a scientific theory, because it isn't testable.
In fact, creationism even fail to be hypothesis, because it is untestable and unfalsifiable. Creationism is based on blind faith alone, because it require believing allegedly all-powerful "invisible" god. "God did it" is not explanation, it is just a matter of belief and faith alone.
The same thing is true about ID. The Designer which they have no way of testing for this Designer's existence. Hence, the ID is another pseudoscience, just like creationism.
The cause-and-effect don't work with creationism and ID; the reason being that there are no empirical evidences to support either a Creator or a Designer.
In science, you can't have evidences for one (EFFECT), without (evidences for) the other (CAUSE). Both CAUSE and EFFECT required evidences in both instances.
Do you know the Boolean Truth tables?
Scientific theory work pretty much like the AND boolean. Both have to be true, in order for the final outcome to be true.
Let's say the "evidence" is denoted by 0 = false, and 1 = true, and existence is represented by that CAUSE = God and EFFECT = nature
CAUSE | EFFECT | AND (T or F)
--------------------------------------------
0 | 0 | 0
1 | 0 | 0
0 | 1 | 0
1 | 1 | 1
We have evidences for NATURE (eg universe, sun, tree, human) existing, but no evidences for God existing. In the table above, this is like the 3rd row.