Bitcoin is simply a type of currency, and in itself has nothing controversial. However, with the promise of freedom that he brings in itself, it is clear that many look at bitcoin with suspicion. But I think it will not take long for it to be generally accepted.
People are basically not ready to accept that there is something that can give them complete freedom. They might be are still in shock because this is what everyone has wanted for years. You are talking on facts and this is what I also see about the acceptance of bitcoin by general public. It is not going to take more than 5 years or a decade hardly for the legalization of the bitcoin in every country of the world.