yea because its not a common technology that everyone could ever imagine without actually using it. even this applies for me too because I was not able to figure out the matter that how and why questions related to bitcoin.
If we are going to discuss the technicality behind the bitcoins technology then it is a very hard thing to do to common people who doesnt have a background on programming. It is much easier to just explain bitcoin as a money online that grows in value as time goes by. That way you dont need to go to the complicated details so as not to confuse your listener. Just tell them simple things and other details will come later.