It is what happens when you put information in front of someone that considers themselves to be highly intelligent and they do not understand it, so instantly it is bad because they cannot understand it, also misinformation is the biggest source of Bitcoin hate.
All debates are generally squashed when telling them that I do not care if Bitcoin is $1 or $1000 because of 2 major reasons. Can still send money anywhere in the world instantly, bypassing political restrictions if the need arises. Also, the government can try all they like but they cannot give Bitcoin balance a 47.5% haircut.
I favour Bitcoin as a medium of exchange over anything else, when I suggest they read the source code and see everything else Bitcoin can be developed for in the future, some actually do and opinions change quickly.
Always remind them that Bitcoin is a technological innovation and not just some new financial product.