1, no one is arguing there aren't natural laws. Or, that an atheist can't acknowledge them. But, it seems to be like one burying their head in the sand when it comes to searching out why laws not only exist, but they are consistently upheld. Saying they exist because they exist, IMO, is willful ignorance. It's refusing to honestly admit where the evidence is leading. Theism not only accounts for natural laws, but it is 100% consistent with our universe. And too my knowledge, Christianity is the only religion that scripturally accounts for a God who creates, sustains and upholds these laws.But every time people do an experiment natural laws hold. So, with very high probability, there are natural laws.
"For by him all things in heaven and on earth were created, things visible and invisible, whether they are kings, lords, rulers, or powers. All things have been created through him and for him. And he is before all things, and by him all things are held together." (Col. 1:16-17)
We observe. When? In the present. You light the fuse that blows up your argument.Gravity was not non-existent before humans with very high probability. Why? Because we observe e.g. gravitational lensing.