I think that people hate Bitcoin because they do not have the patient to wait allot. When you make use of Bitcoin you have to be patient because the price can be stable for a while.
Patience is not the issue because that is the normal activity once a person involves in bitcoin. Being a bitcoin hater will start from the start meaning the time that people are not engaged in this kind of currency.
Expected output, speculations, accessibility are some of the key reasons why people don't use (not hate) bitcoin.