What predictions can you generate from it that you can't generate from other theories about the world? That's what scientists mean by useful.
In that case, knowledge of God is
not scientifically useful

I'm perfectly happy to own that fact! To the individual, it's the most useful thing in the world - the difference between life and death.
But you've just said we have no right to exclude entities without evidence from our explanations. Just as there's no evidence for a pink unicorn causing gravity or rain or thunder, there's also no evidence that god played a role either. If you see someone knock over a cup, do you think "the person knocked the cup over and it fell to the ground" or do you think "the person touched the cup and an invisible fairy leaped out of his hand, pushed the cup over the edge, then flew it to the ground." One of these hypotheses is more elegant simply because it has fewer entities to consider.
You're getting into the realm of the ridiculous here...
I'll just make the point that there is plenty of evidence for God creating the world. I'm a scientist. I don't believe in
anything without evidence. My evidence for God comes from three sources:
- Historical evidence in the Bible. It's more well-preserved than any other text in existance. You'll see a lot more inconsistencies between different copies of
The Odyssey than between different copies of the Bible.
- Natural science. I come across it every day and I am never, never convinced that it was achieved by random mutations and selection alone.
- Personal experiences.
I look at these sources and weigh them up in my head, and Creationism is the conclusion I come to. I can't convince you in a forum post. You're going to have to do it for yourself.
Just as a quickie, they wouldn't be arranged the way they are in rock strata. Organisms occupy distinct layers in geological strata so that you don't see rabbits in the Ediacaran and you don't see saber tooth tigers in the Jurassic. You also see patterns of distribution according to geography- earlier ceratopsians like protoceratops and psittacosaurus are found in earlier deposits in Asia, but later ceratopsians are found in North America in different rock deposits. If the fossils had resulted from one cataclysmic event, why would you see animals in different rock layers and in different locations.
OK. I obviously don't know enough about this

Just one point: how are entire animals preserved within a thick layer of soil? e.g. a horse is 2 metres high and would
a lot of time for soil deposits to build up around it - during which it must have decomposed / been blown away / something. It seems to me you need a dramatic deposit to fossilize an animal. Like a flood.
Genetics actually supports evolution as well. There's a reason that birds havev DNA that's more similar to other birds, and mammals have DNA that's more similar to other mammals, but birds and mammals have DNA that's more similar than either have with fish. If you start grouping animals under different traits, what you start to get is an expanding pool of groupings. What's REALLY interesting is that this pool of groupings can be organized like a tree. What's even more interesting than that if you construct a tree out of genetics instead of physical traits, you get an almost identical tree.
Sure. It's not impossible that God did it this way: He took an amoeba, then changed it slightly to make a more sophisticated amoeba, then duplicated its cells, ... then added gills, ... then added feet. I mean, that would give the same result. He doesn't have to start from scratch for each organism.
It's not jumping to conclusions though. It's not like evolution was concocted out of air by Darwin and embraced because it was the only explanation we had available. There's been 150 years of people trying to argue, disprove and throw out evolution. Rather than accumulate flaws with the theory, evolution has been continuously reinforced.
Evolution was embraced because it is an extremely elegant, intelligent theory

Doesn't mean it's true though! Read through the literature of any biological specialisation (e.g. neuroscience) and you'll see lots of beautiful theories which make sense at the time, but are later disproved.
Also, I might be mistaken in this, but I hear there are emerging problems with Evolution, especially as you get into the most specialised areas. Some athiests aren't entirely convinced about Evolution either.
Please go into further detail about your problems with evolution though.
It just seems to me that Evolution is more of a "cop-out" than Creationism is. Look, Evolution starts with the assumption that "there is no God", and goes on to say "therefore everything must have been by random mutations and selection". Then, to accomodate the probabilities involved, Evolution states "life must have appeared millions and millions of years ago". Is there anything (other than Evolution) that suggests that life is this old?