The origin of life is just one in a very long series of questions that used to, out of ignorance, be answered, 'Well, dunno...so it must've been God.' That's what religions do, they embrace ignorance, and ascribe anything they don't understand to God. But just because we don't understand something now doesn't mean we won't understand it eventually. And even if there are some questions we *never* answer satisfactorily, that still does not mean the root cause is God. I hope we don't answer every single question -- that'd render the universe a rather boring place.

So, DNA is complicated. Many living things are complicated. So what? Fractal images can be complicated too. String theory is complicated. Dark matter is complicated. Making a really superb chili is complicated. Doesn't mean that God had anything to do with anything, or even exists. It just means that the universe in which we live can be kinda confusing, and we haven't yet figured out how everything works.

Now, if while looking through DNA scientists find some molecules signed 'Designed by God. Copyright (C) 4000 B.C. All Rights Reserved' or something, hey, maybe we should start lending more credence to theory that God did some work. Wake me up if that happens.