What's with you and the hate for bitcoin? Bitcoin not being beneficial to you doesn't mean that it is not going to be useful to anyone. You probably haven't found any use case for it, but there are people out there who finds bitcoin very convenient. I remember reading a thread where someone wanted wanted money really bad and his friend sent him instantly. Yeah, I know, both had to pay premium fee and conversion rates but they still did manage to pull it with the help of bitcoin.
And then there are people who believes that it is a better investment as a store of value when compared to gold.
Slow? Pay premium fees or wait. Can't do any of those? You altcoins. Sacred of hackers? Take proper precautions and the chance of getting hacked is slim.