I can understand your confusion and frustration with the issue of a cure or complete elimination of asthma.  In their search for that asthma cure, scientists have given many asthmatics hope for an active, normal life with the discovery of many effective drugs to help treat asthma symptoms and anatomical changes that take place in the airways.  Not only that, but they have also brought about awareness about how people with asthma can change some of their behaviors to keep their symptoms in check and make the most of living with their disease.  When a person is on the right medicines and management plan, they not only find temporary relief but daily relief of their symptoms and experience little or no symptoms at all.  So we do have to give credit to those scientists that have made these discoveries that help all people with asthma breathe easier.

Because asthma is not a virus, there is no vaccine available.  However, that's not to say that someone in some science lab is not looking at that possibility and working on an approach to treating asthma in that fashion.  Asthma is a chronic disease of the airways, compounded by the complexity of changes that occur from childhood to adulthood.  Asthma is also very susceptible to environmental factors.  With our environment constantly changing, it's somewhat challenging to gain control when we may not have control of what's going on outside of our bodies.

Overall, our modern day approach to diagnosing and treating asthma have made huge strides to gain symptomatic control of asthma.  With the availability of many different medicines to treat asthma symptoms, people with asthma can find long term relief until that cure is found.