It's not rare to see people who underestimate about something that they just heard, they need proof to convince their self if bitcoin is really legit or not. but when they missed the train they hope to go back in time so didn't miss any investment opportunity.
True. When I've talked about bitcoin to my few friends, they've doubted me and never got interested. But when they've seen that the price gets pumping, they started to notice it and became interested all of a sudden. There's a need for them to validate first the information even if it's coming from a friend of theirs. That's why, I don't trust any of them anymore since they didn't trusted me and doubted what I've told them about bitcoin and trading with it is a profitable thing if they get to understand how the market goes.
Well, its quite normal to have doubt at first. I also experienced this to my family after telling them about crypto but they just ignored what im saying. However just like the saying goes "
to see is to believe" we need proof first before we can convince them and I dont see anything wrong with their first impression. If they are really interested and see for themselves the sincerity of what you've said, then there's no need for further explanation, because they will certainly find ways to know more about it once they validate what you said is true.