I believe it is also due to the fact that people are naturally jealous of other people's fortunes, since wealth is generally being perceived as zero-sum, whethe

I believe it is also due to the fact that people are naturally jealous of other people's fortunes, since wealth is generally being perceived as zero-sum, whether it's true or not. So here you have a bunch of people that seem to be getting rich "at the expense" of others, and maybe don't fully understand why, therefore they put up a fight. Very natural tribal behavior identifiable in a variety of different ways in the history of human kind. Also people think of themselves as naturally intelligent (ego), so if something is creating wealth but they don't fully understand why, the instinctive reaction is to dismiss it because the other option is to essentially admit lack of knowledge which hurts their ego, therefore it is again a natural "self preservation" reaction. Also this more naturally creates an emotional response, since ego is a highly emotional subject to begin with. To be against Bitcoin is also a generally safer bet: dismissive opinions are almost always small easy wins in the unpredictability of the future of Bitcoin. But Bitcoin maximalist only have to be right once eventually. We saw this with every major invention, electricity (will kill people!), internet (just a fad!), etc. Now with that said I am not expressing an opinion on the eventual success of Bitcoin, it could very well fail.