no, this is an old argument for me, because i used to get accused of being a pessimist all of the time. it's actually not even true.
whenever pessimism vs optimism is presented to you, what is actually being presented to you is really just a false dichotomy, but it's intriguing because it obscures a more fundamental division, which is realism vs magical thinking. pessimists and optimists are really two sides of the same coin: they're both existing in the realm of fantasy, of magical thinking, of utter delusion. the real counter to both optimism and pessimism (which are the same thing...) is realism.
the volume of water in the glass is 50% of it's maximum capacity.
get it?