It is just like in the sense of tasting, if you tasted that salt is sour but other says that it is sweet. You would believe them or not? Let them say that you are just wasting time but they will finally see in the end that the time you are wasting with bitcoin is going to be profitable in the end. The same thing as my friends thinks about with bitcoin.
like one of my friend say that i am doing illegal because they are not know about bitcoin.
Like you have said , my friends doesn't know about bitcoin so they can talking like that but beside that when my friends knowing about bitcoin they will starting to love and using it on their daily life.