Atheist believe in the very beginning RNA and DNA self assembled into complex organism. From that self assembly all life spawned into what it is today.Claims that atheists have faith just like religious people is a fallacy of equivocation.
For RNA and DNA to self assemble would be the equivalent of fine sports car like the Porsche 911 Carrera 4 GTS building itself.
Atheist believe this without any scientific proof complex life forms can derive out of sterile lifeless material and self construct. That my friend takes a hell of a lot of faith.