Okay...but why are we specifically mammals and not reptiles? If we have no relation to other animals, why are we so much like them to the point that we can be grouped in with a specific group of animals?
This question can be taken further to, why did God make human DNA to be 99 % similar to chimpanzee DNA? Is he deliberately trying to confuse us?
As a Christian who does accept evolution, I like it!
PS: How does a Christian read Genesis while still accepting evolution?
Because Genesis 1 is a highly structured narrative more like a POEM than a literal engineering manual. It explains why God made us, not how God made us. It explains our relationship to God, the world, and each other, while marking down the Enuma Elish (Babylonian creation myth).
If it were just a literal list of what God did when on what day, I'd be bored to tears by it. But the fact that it is a 'poem' that in some places satirises other Ancient Middle East creation myths makes it so much more interesting!
Dr John Dickson (Phd in History), an Anglican Theologian, forces us to take a fresh look at Genesis from the world-view of the Ancient Middle East. He especially compares Genesis to the Babylonian creation narrative the Enuma Elish which was written on 7 stone tablets, read out once a year on a national day which to the Babylonians was a bit like Christmas and Independence Day and Anzac Day rolled into one!
Genesis 1, as a creative counter-narrative to the Enuma Elish, is theological dynamite! Look at some of the extremely controversial images:
1. There is one God, not many.
2. The one God is the master of land and water, not like the Babylonians whose hero Marduk slayed Tiamet, and half her body became the land and half the water.
3. The stars are NOT gods! We don't serve them or sacrifice babies to them! No! They serve us! (This is heresy to the ancient world!) They are our calendar.
4. The sun is our servant and lights our skies. In Egypt the sun is of course the god Ra, a being to be served.
There is so much more, but I'll leave it to Dr John Dickson.
http://www.iscast.org/journal/articles/Dickson_J_2008-03_Genesis_Of_Everything.pdf