How can someone say that Bitcoin is useless if there are people who works hard on it and earn in Bitcoin and helps them in providing their needs? If you are going to say useless it means that you that people didn't expect something from you or you don't have any contribution from the first place.
That is definitely right. I do believe that those people who says that bitcoin is useless are the people who do not know what the bitcoin really is and also the haters of bitcoin. Bitcoin cannot ne considered as useless because it already help a lot of people specially in their finances.