People only hate it because they dont have enough data about it or have bad experience with bitcoins and they just are desperate to understand real benefits of bitcoins.
I don't think people hate bitcoins, because at these present days most people of the world still does not know about bitcoin, and people can't hate what they do not know. However I think there are many persons that know about bitcoin and still are distrustful about it.
As said, many are not still aware of BTC and its benefits. There is no reason for hating btc. When you get good returns from something, what is the need of hating it. Must be very happy at the returns we get.