Matter would have had to form itself from nothing. This has never been observed by any scientist. Life would have had to arisen on its own from dead chemicals. This too has never been observed. Scientists have observed microevolution, but not macroevolution.
Creation scientists agree that microevolution occurs.
No evolutionist saw the big bang, or has adequately explained why such a big bang resulted in so much order when all explosions we see today always result in disorder. These problems just barely scratch the surface of the myriad of problems with evolution. Until scientists can demonstrate with scientific experiments that all four of these events can be duplicated and observed today, it is bad science to elevate evolution to the level of a scientific theory. Second, creationists complain that too little time is spent analyzing the weaknesses in the modern theory of evolution. This observation also is correct.