I will respect their decisions if thats their point of view to bitcoin,but i would only try to explain what bitcoin helps anyone who get involves with bitcoin also,and how many of our mates do their testimony that through this bitcoin their life i Mu h better rhan before.
But i think we should explain about bitcoin in detail, because these type of people need explanation. Usually these people said about bitcoin illegal thing because they have lack of information about bitcoin, if we give them detail then may be they will understand it.