Serious answer. God does not want people to become christians to get everything they want. If God answered yes to every prayer a christian prayed, then non-christians could see this and then make the decision to become a christian in order to get some of the swag. God wants you to become a christian because you love him, determine that living according to his will is the best way to live, and that you are committed to doing the right things and making the world a better place.
God normally lets the laws of nature take their course. The flow of a disease is neither part of His desire, nor is it against His desire. His will is not involved. We are the ones who see physical death as an evil thing, not Him. He knows that death is inevitable and that the timing of it is not as important as we seem to think. When we pray, we are asking God to allow or prevent an event contrary to the laws of nature. He will do this on occasion, if He thinks that the benefit of it is worth it. We can't see things from His perspective, so we are unable to determine when the good outweighs the bad like He can.
God has given us free will and allows us to use it. With good consequences and bad ones. He has also given us the intelligence to solve problems and learn to manipulate nature. Medicine is one of those ways. God expects us to take care of our day to day needs. He gives us the raw materials and the ability to use them. I don't understand the people who eschew medicine. The bible has many examples of people (like Luke) and medicines. Paul told Timothy to take medicine for his stomach. (in that case the medicine available was wine, but that is still a valid medicine.)
