Do you think that all cancers will ever be curable, preventable or none life threatening?

Hopefully one day: I can only speculate. We need to realize that "cancer" is really not one single disease. There are so many different types, and though they all arise from mutations in cells leading to abnormal growth and spread, they can behave very differently. I'm optimistic by nature and I believe that it may one day be possible to effectively treat or cure all types. If so, it's probably many years away.