I am not a scientist. I am however a fairly well educated, and well read individual, and I've been brought up thanks to my parents and my school system to trust facts over myths. I'm a skeptic. I need to see evidence. However, I'm perfectly aware that large parts of scientific theory go right over my head and just don't make sense.
I do understand the theory of evolution to a reasonable degree, as I studied Biology in High School and it's obviously an important part of the course, as it should be. Because it's been around for 150 years in a solid, well put form, and it has it's self evolved since then, being linked up with Mendel's research into genetics from a similar era, among many other things. That's the great thing with skepticism really. You believe in something until enough evidence is for an alternative theory. And as we travel forward through 1 & a half centuries, nobody has put forward a theory with more evidence than the theory of evolution for how life has gotten to this point in time. And ironically enough a lot of the arguements against evolutionary theory are still stuck in the 1970s, commenting that while micro-evolution has been proved, there is no evidence of macro-evolution, the so called "missing-links". Which just shows a poor understanding of the theory, changes take place, unbelievably slowly, over millions of years and uncountable generations. But despite the fact that fossilisation is an amazingly rare occurence (I can't remember the figures I once read but I'm sure it was about 1 bone in every million, or maybe it was 1 in 100,000, but you get the idea) examples to exist. Darwinius masillae, a transistional primate, Odontochelys, a transistional turtle, Yanoconodon, a very early mammal with one of the the first examples of taking the reptilian jaw and using it in our ears, or how about Puijila darwini which looked a lot like a seal but for one striking difference: feet instead of flippers! There are plenty examples you can see for your self if you so wish to go looking.
Science is not always right. But unlike faith, science is capable of standing up to examination, and when stronger evidence for another theory comes out, the stronger theory will then move on to be commonly accepted.
The fact is that we have evidence from the very rock we live upon as for how old this earth is. And it is an awful lot older than the 5,500 years suggested by creationists. Because we know so little about how the universe started, (and by little I mean nothing at all, the big bang merely explains what happened immediately after nothing miraculously turned into something) I would be willing to accept that some "spirit" or god or whatever you want to call it kicked the process off, but it comes with a big caveat. Once things got started he has not since meddled in our existence. We are too insignificant to be bothered with. I mean come on, when you consider how large the universe is it gives you an ability to appreciate just how utterly tiny we are. Our solar system alone stretches out at least 4,650,000,000,000 miles. That's 4.65 trillion miles (or about 1 light year). We're just 93 million miles from the sun ourselves. The nearest star is 4.4 light years away. The fastest speed we have ever reached is 17 kilometres per second (that's roughly 38,000 miles per hour, which would be fast enough to go around the equator of our own planet 95 times in one hour) with the Voyager One spacecraft thanks to getting a gravitational boost from several large planets. So if we were travelling to the Alpha Centauri system with that (it's not going to go near Alpha Centauri in reality) craft it would take nearly 80,000 years. So essentially, we're really really far below the radar of any potential "god" who kicked the universe off.