Never spend time in convincing other if they are not interested to know about anything particular,it is a waste of time and energy.You will get many questions and skeptic views from everyone because they could not comprehend about how something which is virtual is having a value will be the biggest question everyone is having and it is not possible to give a reasoning for all these people.
I quote every single word. Some people will never understand it's better to spend energy in something positive for you (like learning more about BTC!
). If they need to be convinced they don't deserve to join us.