Atheism is not the belief that there is no god, it is the lack of belief that god does exist. Think about that. There is no such thing as agnosticism, it's not a middle ground because there is no middle ground to occupy.
You are absolutely wrong. Take Cofty for example, he is 100% convinced no god or no intelligent life or creator for our origins of life. For him all by chance, no chance of anything behind it. He is atheist.
Now me, I see how there can be intelligent design in life. Whether biological scientists created us, other dimensional beings (spirits), us being enclosed and part of a simulation, a God as religions belief, etc. Science hasn't figured the origin of everything, and no way to know which religion if any are right, or if another intelligent design completely absent of any religion, etc. That makes me more so agnostic.