Joy and hope shouldn't be based on your own or other people's fantasies, but grounded in reality. Reality, as it stands, is still best defined by established facts, and universally agreed upon science and history. Science is breaking ground into consciousness studies, but knows what it doesn't know-- a lot. That's what I meant by a ignorance earlier. Probably not the best term, but it's true in a sense, that that which I do not know, I'm an ignorant of.
However, I think it's obvious that all life is a unity, and that is comforting.