Why is there something rather than nothing? That's the question I'd put to the other side. The universe has constants tuned so narrowly that a slight change means no stars, no chemistry, no observers. My opponent can fairly say "we don't know" beats "God did it," and that's a reasonable caution. But "we don't know" is a placeholder, not an explanation. Something has to ground why a cosmos exists at all, and a mind behind that order is the least thin answer available. That's my opening.

Isn't it telling that the god-of-gaps critique only works against bad theology? My opponent's thunder example is fair, and I'll concede that unexplained things often get natural explanations. But that pattern addresses mechanisms, not existence. Explaining lightning doesn't explain why there's a universe with laws at all. The fine-tuning point isn't "we don't know, so God"; it's that order, rationality, and contingency need a ground. Closing gaps in physics leaves that question untouched. So the other side has described how nature works, not why there's nature rather than nothing.

Take a real-world case: math invented for pure curiosity, like non-Euclidean geometry, later turned out to describe gravity and particles nobody was looking for. That's the rational order I'm pointing at, not thunder. My opponent's strongest point is that positing a mind can be untestable, and fair enough. But the regress question cuts both ways: contingent things need a ground; a necessary ground doesn't need another behind it. The god-of-gaps critique hits lazy theology, not the question of why there's a rational universe at all. So I'll stick with FOR.