Of course it isn't just random biology. Natural selection is a powerful force for organisation and complexity.
No intelligence or purpose required.
I should have said random forces. At the beginning of a godless existence, everything would have been random, without any guide or purpose. I disagee about intelligence being needless to get us to the world we have today. On the contrary, with the complexity involved and the organization you're speaking of, it's simplistic to think this happened only through random circumstance and/or natural selection.
Deadly toxic plants and animals, predation, parsites, viruses, tsunamis, earthquakes, genetic deformities, childhood cancer, so many things let me know there is no reason for it all.
Life is awesome and awful in equal measure.
You quoted part of what I said. The high lighted part is what you left out.
I can't answer all the questions for the things that are messed up about it, but I can sure appreciate the things that are perfectly right about it. Gardens, babies, fresh air, varities of weather, LOVE, ...so many things let me know there is a reason for it all.
If I build a wall and over the years, nature's tools: wind, temperture and rain cause it to break down, it doesn't mean I didn't build the wall. Good things happen and bad things happen, that's been my experience during my life. It doesn't mean I didn't have parents or my life didn't have purpose. So we have: "Deadly toxic plants and animals, predation, parsites, viruses, tsunamis, earthquakes, genetic deformities, childhood cancer," your list, which is by no means exhaustive. Those things don't mean there is no purpose or reason for the good and the bad in the universe. We don't understand everything about our existence. That's all the bad things prove.
I believe you said you're 100 % certain there is no god. I respect that is the conclusion you've come to. I'm not here to change your mind. I have a different conclusion from you. I'm not going to apologize or quake in fear of being insulted by you. My dad was one of the most intelligent men anyone could meet. He had a rarely high IQ. He was a man of science. He was an oceanographer. He was not an atheist. He was not a Christian. He was an evolutionist. He told us that through all he had studied and seen in nature, he was convinced of intelligent purpose behind everything. His maternal grandfather was Native American. Dad spoke of The Great Spirit and its hand in things. Science was his love, fascination and career. He did not conclude there is no god, because of things that don't go the way we all think they should.
Do I think you have to agree with my dad? No. You don't. Several atheists I know say that they don't feel anything up there. Each has his personal list of reasons why he/she doesn't believe there is a god or gods. That is absolutely cool with me. Viva la difference.