That's the most reasonable opinion in the room, I agree. It's the fear of the unknown that's driving all the hysteria. At this stage, we don't fully understand how COVID-19 is spread, and it seems to spread much more easily than similar viruses:
Genomic analyses of the new coronavirus have revealed that its spike protein differs from those of close relatives, and suggest that the protein has a site on it which is activated by a host-cell enzyme called furin.
This is significant because furin is found in lots of human tissues, including the lungs, liver and small intestines, which means that the virus has the potential to attack multiple organs, says Li Hua, a structural biologist at Huazhong University of Science and Technology in Wuhan, China, where the outbreak began.
People are also fearful since it could take more than a year to develop a vaccine.