Although I respect all beliefs there are some factual errors in your post. First of all, you are correct in saying that evolution is a theory but it is not a scientific fact. A theory is a hypothesis that has been tested but it is still not accepted until sufficient research has been done to call it a scientific law. Gravity for instance is a law but evolution is not. Second the example of fruit flys you gave is an example of microevolution which actually has been proven to be a fact.( ie birds that have different beaks or different dog breeds) on the other hand, macroevolution( turning 1 species into another) has not been proven. Like I said opinions to each their own.