I am not. I am a broker/trader/money manager, who happens to have a degree in chemistry and a few years of experience as an engineer.
Do you wake up every morning thanking God that you believe in him, because if you didn’t darned if you might just fall through the floor or shoot up through the roof?
No, I rather thank God that he maintains the order of the universe and I can be confident that he is immanent in his creation so that the elements behave in an ordered and predictable manner. Kind of like ALL the men of science did before we decided to dress up NATURALISM like some kind of drag queen and call it "science." You keep the same insistence on order, predictability, and uniformity...., you just don't have a clue as to why anymore. Instead, you are forced to some idiocy about statistics and our incredibly limited range of experience (which itself is not even consistent when we approach matter and energy on a qauntum level)....... so you bluster instead. Clear enough?
Every time an observation is made, it tests the hypothesis that physical laws do not change.
People have looked at evidence for the speed of light, which is thought to be constant, and determined that it has been constant for billions of years, maybe since the beginning of time. In the same way other constants have been studied. You seem to have this hangup in which you think that because something is assumed, it cannot be confirmed or denied. If it really were true that we were just supposing that these things have been constant and are currently constant and do not or cannot check up on them, then such assumptions would be outside the realm of science. As it is they are not because they are constantly tested.