Your teaching and the words you pick to describe what Bitcoin is to someone will determine how they will react towards you if investment goes wrong or right, you can start by telling them how price of bitcoin can fluctuate and can’t be predicted they can’t get quick profit from it like they are assuming or see online, you give them the vital information and allow them to decide so that they can take sole responsibility for their decisions and not go hold you accountable for their lose or impatient.
Yes, the first thing that needs to be conveyed when we tell people about Bitcoin is our opinion so that it is easy to understand, and by explaining it simply, maybe they will easily accept it and they won't ask many questions, I think that's enough to convince them so they won't talk too much or pressure us.
For me I don't think we should even tell them about our own opinion at first it will be better we tell them about Bitcoin in general telling them everything they need to know about Bitcoin for example if you are using the DCA strategy it will be better you explain to them about all the types of Bitcoin investment strategy than just telling them about the DCA strategy you are using the reason for this is that the strategy you are using that is comfortable and okay for you may not be comfortable and okay for another person so they need to choose the strategy they will fine more comfortable with, if you are using the DCA strategy and you are telling a very big busy business man about Bitcoin investment and you only tell him the DCA strategy which is buying weekly or monthly he may not like the idea because of his busy schedule but if you tell him about all the different strategy he may go with lump sum strategy since he will just buy once with huge amount of money and hold so please it will be better you tell people about Bitcoin in general and not just your opinion.