Read a psychology study the other day that I can’t find right now, but basically said that pessimists and conservatives on any topic are basically afraid. That could mean afraid of change, afraid things could get worse, afraid of the unknown, in some cases physically afraid depending on the situation. What I see is a “fear” from some of being wrong or fear of failure and being open to ridicule or whatever they feel the result of that failure might be. Others (optimists) don’t care about any of that because they feel like things could be better and even if we fail it’s better to try than continue as we have been trending in their view. Those are the type of people who embrace change or who see what could be “better” rather than seeing what could be “worse”. To those trying to rationalize their feelings or “attacking” how others are reacting, it may simply be the different psychological makeup of the individual in question.