We've been fighting cancer for years with very little progress but be sure to continue to send money. It's the same for most other diseases.
I have MS. After many years, I'm slightly jaded when it comes to the pharmaceutical companies, and even medical research. Sometimes I wonder if they want to find a cure, which is sort of impossible till you find a cause, and that has never been determined.
There's so much money to be made on the treatments (which cost boatloads of $$$, have a general success rate of 33-50% in slowing down the number of exacerbations, but evidently not preventing diability, and have a myriad of side effects, some of them fatal.)