on the other hand I cannot assume that their opinions are wrong, but on the other hand I cannot justify their statements.
I always think that people who have opinions like that are people who don't really know about blockchain technology, or they just read from one of the articles that happens to provide news about a "dark" case in bitcoin, so they often assume that bitcoin is a range against hackers and scam.
what do you think about finding people like that and how will you react to them?
When I come across a person who thinks Bitcoin is a scam, I try to make him/her informed by sharing some sources that tell what really Bitcoin is and its history. I hope they will have a good understanding by reading from true sources.