Mice are fine for ordinary work like toxicology trials. Perfect for checking that no unwanted side-effects crop up when they try a new molecule. But it’s a complete mistake to think they represent a good model of human disease.
For example, tuberculosis in mice is simply not the same as in humans. Mice do not cough, nor are they contagious so they are testing them for no use, atleast in most cases.
Sure, but there are still many things that can be tested on mice. And people are generally happier testing new drugs on mice before killing thousands of people with it