I think some people hate it because they have lost money, by their own mistake. But in most cases the red flags are there for those who perform research on the bad investments. Of course it is not fault of Bitcoin itself.
Not all has that kind of failure in bitcoin, some are just not patiently waiting and have too much expectation on bitcoin price and usability.. Some of those who hates bitcoin and not yet a bitcoin user also don't have an experience or just base their thoughts about bitcoin on any internet thing that most of the time are fraud...In short it needs an understanding for you not to hate bitcoin and for it to be beneficial to us...
