We are far used to the countless dishonest creationists that someone that is reasonable, and I am not yet saying that you are, may be treated in the same way as the dishonest ones.
But let's go over the points, and why we know that life is the product of evolution.
A key concept to understanding evolution is the Nested Hierarchy. Just as you can trace back in your own lineage to ever greater groups, such as your immediate family that you grew up with, the family that you grew up with and your cousins. The family that you grew up with and your cousins cousins. You will keep finding an ever increasing group.
We can see the same thing in evolution. You can trace it either way. Starting at the first life source and moving on down or starting with one species and moving up. Hopefully this gif posts. If you note there is an acquired trait and everything in the same clade (a group of descendants) will have this same trait:
Yeah! I can see that it works. That is just one list of nested hierarchies. There are several independent ones. And they go hand in hand with the same phylogenetic trees. This is thought to be much stronger evidence than the fossil record alone, but the fossil record also makes such a phylogenetic tree.
If evolution was not the answer the trees should not match. Yet we see them for DNA, the fossil record, ERV's. morphology, and more.
If you want to know why and can come across as being reasonable people will be polite to you. Lately there has been an overdose of people that refuse to understand and blame those on the evolution side for their own recalcitrance.