First of, this started as a rant, and I respect rants. I like to rant myself once in a while. But now this threatens (or threatened) to develop into a serious discussion! There are of course several definitions of optimism, pessimism and realism. Now pessimism and optimism are always opposites (when you pick analogical definitions) and with some definitions it is possible to have realism squat in the middle of them. In that case, you have to define both optimism and pessimism as unrealistic. Psychologically speaking, the jury seems to be still out on this qualification. There are cases where it is realistic to be optimistic (or pessimistic), so to say.