If that is really the case and the deity can help people in desperate need but fails to do so, it must have a heart of stone! Of course the faithful will makes excuses for negative responses, whilst praising it to the skies if they get a good outcome.
Floo, what do you regard as 'desperate need'?
It puts me in mind of the modern parable of the guy who was caught up on the roof of his house in a flood and prays to be rescued. First a neighbour came by in a small boat and offers him a way out. The guy thanks him but says 'No thanks, God is coming to rescue me'. Then a larger motor boat arrives, but the guy gives the same response. Then a helicopter arrives above him, but again - the same response. Shortly after, he is swept away by a large wave and drowned. When he faces God, he asks why God didn't come to rescue him, to which God points out that he sent two boats and a helicopter.
I sometimes feel that non-believers believe that religious people simply pray for God's help. In a way, yes we do; we pray that the doctors will be able to use their God-given abilities to resolve what might be a very complex, multi-layered problem; we pray that someone who is terminally ill will not suffer pain and that the hospice or hospital staff will be able to make them as comfortable in their last days as possible; we often pray that the miracle of medical science will actually work on this or that person, especially when one remembers that no two incidences of a condition are identical, and doctors will necessarily need to tweak their abilities to each new case. In other words, we pray in and into the context.
OK, occasionally people will pray that their 95-year old granny will be restored to health despite that granny saying that she is quite happy to fade away - but often is this in response to a fear of a future without them as opposed to the best for the granny? After all, this can happen to any of us, assuming that medicine can resolve something as straight-forward and natural as old age.