Christians may say God is the reason something exists rather than nothing. But they really care about one specific form of that idea - that God intended to create. And then in turn they care about one specific form of that idea - that this intention was love. Many then in turn care about a specific form of that idea - where because God is love and made all because he loved that he wove morality in the fabric of the universe. So rather than a random creation or accident he has made a universe were objective moral purpose matters immensely.
They list the alleged advantages of all that.
That our design is a gift from God.
That we have inherent value so our dignity does not depend on our actions or social status or intelligence. This supposedly implies universal rights were every person possesses unalienable value. So injustice and wanton harm are evil.
Claims of such importance need to appeal to our right to choose responsibly. Consider falsification theory. It tells us that a theory needs the other side that may show it is wrong. It is a good but not necessarily true theory if it passes that test. It is complained that it imagines that reality is determinate or clear enough for one theory to be right and another wrong or one theory to be plausible and another implausible. It is complained that falsification theory is based on testing when it in fact cannot test itself. It cannot show that every good theory is able to show how and why it may be wrong and pass that. People worry that falsification assumes some kind of intelligent design where God guides us to the right theory by providing the tools to perhaps disprove it and getting it to survive the analysis.
It is logically and psychologically inconsistent to claim God is beyond human comprehension as in not a person in the way we would imagine... while simultaneously claiming to know how God thinks and thus has intentions.
Theology tries to resolve this paradox through three main views:
The Metaphor View: "Divine intention" is just a flawed human analogy for the ultimate order of the universe, not a literal mental plan.
The Cosmic Force View: God is the "Ground of Being," meaning intention is not a thought inside a mind, but the natural trajectory of the universe toward life and complexity.
The Agnostic View: Concedes the point entirely. We cannot know what intention means for a non-person or a person who is too different to make the term any help. Anyone claiming to know or plausibly communicate God's will is simply projecting human psychology onto the infinite. Or an imagined infinite if there is indeed no God.