It is not very surprising that some people are not able to digest the huge price value of bitcoins as the concept is still new. With time, people will start believing it more.
I wont say that the concept is new. It is not a new thing anymore. Bitcoin ad the whole digital market has been with us for decades now so definitely there is no novelty element in it anymore. The real scenario is people are a way too late in discovering bitcoin and that is their own fault. They are not interested in the evolving technology and are ignorant about the inventions of computer world.