If your a Christian is it worth praying?

[Captain Scarlet]

God has often answered my prayers and those of many other people I know.

As if to prove the point all double blind trials into prayer has demonstrated that it has no effect ie it is unsuccessful.

Prayer isn't something that can be proved or disproved by scientific experiments. Science can only measure impersonal physical phenomena. Prayer is communication with God and whether a specific prayer is answered depends on whether or not God chooses to answer it.

I understand but don't agree. We can test the efficacy of prayer as we can astrology. Both have unproven causal mechanisms, but we can test the input and output. If prayer is ineffective it is what you would expect if atheism is true. If prayer is effective it is what you would expect if theism is true. If you reason as you have done, I could make up a fictional being, get you to demand things of it and you would have no way of disproving my fictional being. Which brings us back to god who I beleive is fictional.