Hello, sog, and welcome to the forum.
You might want to read up a bit on evolution and the Big Bang before you attempt to debate them. It is obvious that you have much to learn about both. The people who have contributed to these theories and shaped them over hundreds of years did not just pick a really simple explanation as you seem to think they did. They genuinely sought out answers to their own questions and hypotheses using the scientific method and then chose the best explanation for the data that they had available to them. These are not mere hypotheses that can be knocked down like a house of cards, but at the same time, given evidence, they can be disproven, if that evidence is reliable.
First of all, one of the subjects you are referring to as evolution is actually known as abiogeneis. This is the process by which living things can arise from nonliving materials. There is more to it than dirt and water, since if you probably already know that if you take dirt and put it in water, no living things arise unless they were in the dirt and water to begin with. However, experiments show that certain chemicals can produce complex molecules such as RNA on their own. It is also known that some strands of RNA can replicate on their own, given the right materials to do so. Also, other molecules can form spherical "bubbles" called micelles, and that larger micelles called protobionts can provide an environment in which metabolic reactions can take place. A similar mechanism is soap dissolving grease - a micelle of soap molecules surrounds the grease molecules to carry them away.
If metabolic reactions can occur in protobionts, and some of those reactions involve complex molecules that can reproduce themselves, what differentiates such a protobiont from a living organism? The first life forms were far simpler than modern ones, even less complex than a bacteria such as E. coli for example. It isn't unreasonable to assume that life started out in this way.
Of course, this is only my simple understanding of the process of abiogenesis. Others will probably take the other points in your topic and might expand upon and correct my explanation. I do hope that you read some of the arguments that differ from your own. A good place to start would be
here but there are many other articles and FAQs on that site and others which you can look at too.