What prevents me is my fear that they will not listened and say I'm scammers, Many times this has happened to me so I don't teach or try to promote bitcoin again because I know very few will listen. And many scammers also use the name of bitcoin here in our country to victimize other newbies in bitcoin so that the blame always in bitcoin.
I agree to you but to promote bitcoin i think this is very hard to do.
The promotion of cryptocurrencies is a very difficult matter, especially when people have no idea about them. Here we need a comprehensive approach, so that not only you tell everything to a person, but he himself explores this world, if he is interested, there is no other way.