The late Cory Aquino has done a lot for the Philippines, gaining fame thru the People Power revolution in the 70's. As she was dying of cancer. there was a prayer movement for intercession to heal her and a lot of Filipinos responded. She died anyway. Her greatest contribution could be that her death proved the uselessness of prayer.
When someone asks god to do something and he doesn't people say it's because he works in mysterious ways. When someone asks me to do something and I don't people say it's because I'm lazy/a dick/apathetic/whatever other word you want to use.