I originally wrote this as a response on a Yahoo! Group, but decided it was pretty good stuff, and should be a blog, too.
I can't understand why Creation-versus-Evolution is even a question in this day and age. Darwin's Evolution Science is, by a HUGE margin, the most well-proved theory in the history of civilization. It is the foundation of everything we know about biology. Half of the people reading this would have died before reaching adulthood without modern medicine, and everything we know about medicine rests on the foundation of evolution. Geology, anthropology, sociology, chemistry, astronomy ... even psychology, would all come crumbling down if evolution were proved false.
But it won't be. Darwin's evolution has been proved in so many ways it's hard to count. There has never, in the history of the world, been a science that's been attacked so fiercely, yet withstood the test. Over and over, every fact that's ever been learned, every bone dug up, every new discovery in physics or chemistry, every advance in our understanding of DNA and reproduction, has strengthened, rather than weakened, Darwin's Theory.
Anyone who tells you otherwise is simply wrong. Why dance around and be polite? Creationism is plainly, and OBVIOUSLY, inconsistent with the world we live in. Darwinism explains it perfectly, in every respect.
The odd thing is that religious people don't challenge other scientific theories that are far less proven. Einstein's theory of relativity? The evidence supporting it is pretty strong, but it's just a shadow of the evidence supporting Evolution Science. Why don't Christians object to Einstein? The theory of plate tectonics? Nobody questions it, but it's just a child compared with Evolution Science. Why don't Christians object to earthquake predictions that are based on plate tectonics? Even the fact that the planets revolve around the sun is barely better supported than Darwin's Evolution Science. Why don't Christians object to that?
The real question is this: If you believe in God, and you believe that God gave you a brain, and intelligence, and free will, don't you think He wanted you to discover the beauty and wonder of His creation? He gave you a brain – use it!
The great thing about science is that, unlike religion, if I tell you something is true, the scientific method obliges me to tell you HOW I reached that conclusion, and you can verify it for yourself. I've done the work – I've read dozens of books on evolution, on biology, zoology, natural history. I've even read Origin of the Species, cover to cover; it's a magnificent work. And you can read it too.
Do your homework. Read Dawkins, Gould, Dennett, Wills and even Darwin himself. They're really good reading. You'll enjoy them. If you want to learn more, take a biology course at your local community college. Then take a physics course, so you'll truly understand things like carbon dating and radioactive isotopes dating, and other scientific dating methods. Then maybe a basic course in geology, and learn the REAL facts about the Earth. And then, AFTER you've done your homework, after you've really studied all this stuff, if you still believe in Creationism, well, then come back and argue.