Because although there are a lot of indications that evolution might be feasible, there are too many unproven gaps in it for it to be recognised as scientific fact. It still remains as a theory, so for those who are convinced that evolution is fact in spite of the serious gaps in scientific knowledge about it, have to exercise a certain type of faith that some time in the future, further scientific discoveries will prove them right.
In the world of science a theory is as good as it gets. In fact the theory of evolution explains the fact of evolution just as the theory of gravity explains gravity.
What are these supposed "gaps". Creationists keep claiming that they exist but they have never been able to show that they exist.
For example: You know the picture of the development of man through the stages of the ape through to modern man. Now, if someone found mummified bodies of all these intermediate stages buried in the ice of Antarctica or Alaska, then that would be a major discovery. But it is interesting to note that 5000 year old Egyptian mummies show fully formed human beings exactly the same as those today, so the human race has not evolved very much in the last 5000 years. Also scientists have found fossilised insects and plants exactly the same as their modern varieties and yet these fossilised ones have been dated at nearly a million years old, and yet they have not evolved at all.
I have to break this up for you. Not much evolution at all is expected to happen in 5,000 years. The oldest Homo sapiens found to date is close to 300,000 years old, but there are noticeable differences.
And no, plants and insects are very similar to modern ones, but one cannot claim that they are exactly the same. And so what? If an organism is well adapted to its environment there is very little evolutionary pressure on it. Change is not expected in those cases. So far the only "gaps" that you have shown are in your understanding.
There have never been anything like half plant half animal or half insect half animal every discovered.
How would you know? You don't even know what the first "animal" species were. If you look at Ediacaran life you will see animals that look a lot like plants.
That means there is no evidence of one species of plant, insect or animal crossing over to another.
What? This is a strawman. And of course there is evidence. You do not understand what the eivdence is.
Geneticists have discovered that all human beings have originated from one original pair of human beings.
No, this is simply wrong. There never were only two human beings. And Y-chromosomal Adam and Mitochondrial Eve never knew each other. Even at their times there were thousands of people. You simply misunderstood a concept.
We don't now how long ago the Tower of Babel happened, but the traditional Chinese language which is a picture language depicts different Genesis events, that show the Chinese did not consider the Genesis record a myth but as a series of real events. The Chinese Mandarin language has never been influence by other languages because of their isolation over the thousands of years since their migration from the Middle East to China and therefore the Mandarin language has never changed. There is an interesting linguistic study of the Mandarin language that shows how the different characters depict Genesis events. If the Tower of Babel event occurred many thousands of years ago, then humans haven't basically evolved over that time, except for regional and racial characteristics that could easily be explained by the development of natural genetics to produce the different types of humans, whether caucasian, negroid, or asian. But all these retained the basic characteristics that makes them human. There have never been any discoveries of full mummified bodies of half human half ape beings, except the ones that have been revealed as frauds.
Okay, let's clean up this last mess and move on. No, the claims about the Chinese language were made by a person that had a minimal understanding of the topic. All of his claims are wrong. And there was no "Tower of Babel". Language formation is very well understood.
Lastly you are an ape. So of course all human fossils are also ape fossils.
Now if you want details on any of your errors I will be happy to support all of my claims with valid sources.
I know that you can't support any of yours.
By the way. You did not find any "gaps". I am still waiting for those.