While I agree with your general sentiment and have said similar things myself, I want to note that I read once that if you ask a room full of women how many have been raped, about half the hands go up. If you ask how many have had sex after saying "no", about 90% of the hands go up. So rape -- I.E. non consenting sex -- appears to be fairly common (and other violent/unfortunate events seem to be plenty common as well). A lot of people just do not talk openly about the experience because it makes them feel ashamed or because of the negative reactions of other people or simply because it is not deemed appropriate for polite conversation. I was molested and raped as a child and I am quite open about that fact, which makes many people very uncomfortable with me. It also causes some people to share their story with me privately, people who do not normally admit to what they have been through.

I think "news" focuses on the negative because it helps the human race to survive. I mean running around announcing a storm is coming can help save lives whereas running around announcing it is a beautiful sunny day does not typically have a protective function.