I had the same thought before I decided to go into Rad Onc. My strategy was to get the worse possible scenario, so I went and asked a bunch of medical oncologists and surgical oncologists (approximately 15 total physicians) what their thoughts were on the future of radiation oncology. Every last one of them saw the role of radiation increasing in the future for the treatment of cancer. Every last one of them thought radiation oncology would be a wonderful field to enter at this time. No-one sees any kind of cure or "magic bullet" coming in the near or distant future. One medical oncologist went as far as saying that there will always be people dying of cancer to the end of time. They all seem to believe in the multimodality approach to cancer treatment, and radiation will always be a component of that. These people see cancer as a natural consequence of aging, and only see larger numbers of cancer patients to be treated in the future with our aging population. One doc told me that there are over 400 different kinds of cancer, and no matter what kind of chemotherapy you come up with, there will always be a subset of patients that will not respond. On top of that, some of the doctors stressed to me how cancer cells mutate to become resistant to chemotherapeutic agents, and that this was not nearly as much of an issue with radiation. And, with all the hot research going on Rad Onc these days, the new advances (e.g. IMRT), and all the smart people now entering the field, it seems to me that the future is bright for the Rad Oncs. I even asked a pediatric oncologists about the future of radiation therapy in peds cancer, and he saw no end in sight for radiation. That being said, I asked one medical oncologist, "what if everyone is wrong and radiation therapy does become obsolete - what will I do for a job?". He said, in that very unlikely event you would adapt your practice to the current field of oncology. i.e., we would jump on board and start utilizing whatever treatment technique made radiation obsolete. I guess because radiation oncology is such a small field we could probably just meld right into the oncology field. Anyway, no-one thought radiation would become obsolete, but I guess it was comforting to hear we could just adapt our practice. As far as a cancer vaccine goes, it seems to me that if cancer is a natural consequence of aging, there will be no way to cure all cancer unless you can cure "old age". According to the latest statistics, cancer causes about 1/4 of all deaths. If we cure cancer, what are people going to die from? Does anyone see us pushing the average life expectancy to 90 or 100 years in our lifetimes? What I think may happen in our careers is that cancer screening may improve so that we get more early stage breast cancers, prostate cancers, head and neck cancers, etc. If this happens, we will be able to increase our already impressive cure rates for our patients of 50-60% with radiation (at least this is impressive when you compare it to the medical oncologists cure rates) to an even larger percentage, making the field even more fulfilling. Anyway, I would love to hear what others think about this.