God's Will

I consider myself to be a very rational person and in some ways wiser than others my own age. I have always been an observing person. Even when I am doing the talking, I attempt to observe their reaction. I sit and I analyze things until I have that "ah-ha" moment to know exactly what to do. It's a process that I go through that has worked well for me. However, I have a situation that has presented itself that has stumped me.
There is a man in his 50s that has slowly been withering away these last few years from cancer. He is a pastor who definitely believes and has seen many get healed from cancer. The majority of his family around him is saved and they have been praying diligently for him. According to the doctors, he is getting down to the last few months of his life. The last few years have been hard on this family and I think everyone is to the point where it is probably difficult to take much more suffering.
As I analyze this situation, to me there is only one legitimate option. Jesus must heal him completely of cancer so that this family can get back to living and I know that all involved would give so much glory to God if he were healed. I have seen situations like this before, and I have a tough time with them, because I see no value in the man dying. The only value is that he no longer has to suffer. But God is completely able to bring him out of the suffering without taking his life. I have attempted to analyze this from every possible angle and I see no benefit in allowing him to continue to suffer and eventually die. He needs to be healed and it needs to be now.
When presented with situations like this before with other people and they begin to ask questions, I can never answer, because I don't want some lame, non-spirit led answer to flow out of my mouth. So, I can't even say to myself, how can I answer the question adequately. I have no choice but to follow Jesus no matter what. He is the truth and my faith will not waiver in that. I want the man healed so I can brag on the power of Christ and prove to others his deep love. I am ashamed to think of my reaction if Christ chooses to allow the "natural" course of things to progress. It just seems so ungodly to let him die like this.