A prayer does not (and cannot) change reality. So is there any use in praying? I would argue there might be.
Oh, what could you do, if only you had a strong will. Or rather, what could you not do?
Well… That is a depressing question? Who, in a clear mind, would ask that? This simple question is one way ticket to depression. What is the point of me, getting up in the morning? What is the point of me eating lunch every day? What is the point of living this life?