Great. Let's return to that. The entire central United States was a relatively shallow sea, since there were none of those pesky ice caps and glaciers. What is now Florida was well under water, which in my mind is a good thing. Of course the end of the Jurassic wasn't the end of life. It was followed by the Cretaceous, with most of the well known dinosaurs. And, the end of the Cretaceous wasn't the end of life either. The point is that life goes on. However, which life might be important. If your particular species goes extinct, you might consider that bad. Your little screed demonstrates a fie ignorance of paleontology, geology, and climatology. Perhaps a bit more study of basic sources would help.