AJ, you seem to be trying to solve the whole thing backwards. You start with the assumption that your argument(that god created everything) is correct, and then if anything comes along to contradict that, you twist that fact to adjust it to your assumption. In this case, you twisted the fact that rates of decay are constant to fit your hypothesis(note the word hypothesis), and concluded that since using constant rates of decay go against your assumption(which HAS to be correct, in your view), hence rates of decay cannot be constant.
Sadly, you dont take a "To Prove" and then fit stuff to make it true. You prove things the other way around, by looking at facts(not the "to prove") and then drawing conclusions.
As far as the topic goes, I find it funny that creationists say "evolution has no proof", "we havent seen it, hence it isnt true", then "prove" their points based on a story in a book, thus commiting the same mistakes they accuse evolutionists of.
The argument that "life is meaningless without god, hence god exists" is foolish since it assumes that 1)only god gives life meaning and 2)life HAS to have a meaning. Why DOES life have to have a meaning? It is a good way to make yourself feel good, but sadly, facts do not care about your emotions. That's why they are called "cold hard facts"

There are also some misconceptions here about Evolution. Unlike Pokemon, Evolution does not involve RAPID major transformations. It is in fact, a collection of small changes over BILLIONS of years accumulated together to give a "new" species. These changes mostly occur due to changes in the environment, surroundings or some event which may force the changes to occur(over a large period of time obviously) for the species to survive. These changes MAY occur early enough(or at all)before the species dies out. Simple adaptability. We have not observed the BIG "transformations"(or the accumulated effect of the small ones) coz these take billions of years to take place and we have got quite short life spans. Were there a way to go back a few million years, some notable changes from the present world might be noticeable. An example of this would be how some insects have grown more resistant(and sometimes even immune) to DDT over the years, while others are still susceptible to it. This might not seem such a big change to humans, but to the insects, it is a matter of survival, and the "fittest" have survived.
Hope that helps clear up some parts of the debate(though there never was one; on one side you have some fact and proof, on the other you have a book of fairy tales)