Love has its price. God wants to make us alive, and the wider we open our hearts to others or the more audibly we cry out against the injustice which rules over us, the more difficult our life in a society of injustice becomes.
Prayer obtains what it is due to obtain — not what I personally want to obtain, which is different. It is useful that islands of prayer exist in the world, even if they are composed of only one person, or two, or three, or four.