1) We’re a violent species. It would be nice to think that we will improve, but I don’t see much evidence of that. At the same time, we face increasing competition over resources like food and water, so I’m not optimistic. 2) Not death, exactly, but I am afraid of a wasted life. Death itself is inevitable; you die, you decompose. End of story. 3) No. I’m more likely to be struck by lightening or be eaten by a shark. 4) There’s no such thing as God. Religions are a human construct (and cause untold suffering). 5) Because we’re just another type of animal. 6) I have no idea what your question means. Science is truth.