No matter how you preach Bitcoin to some person they will never agree to buy Bitcoin and that is their choice and their also those that you will only say a little about Bitcoin to them they will go ahead to study more about it on their own and take advantage of their learning and can take it more seriously than you that that said little about Bitcoin to them, you don't have to break your head trying to preach Bitcoin to anyone focus more on what you can do for yourself and let you testimony speak Bitcoin is not begging anyone to invest in it for it to be called Bitcoin.
If buying bitcoin is not from personal interest and decision but under pressure of anyone else, it's not good and Bitcoin will no longer be good and attractive with many people. Being own banks, having freedom, privacy and somewhat anonymity are many things that make Bitcoin attractive and valuable.
If you want to contribute to Bitcoin adoption growth by education about it, it's good but you have no responsibility to bring new buyers, investors to Bitcoin market. When people understand about Bitcoin, and aware of
the bullish case for Bitcoin, they will do investment very organically without pressure from anyone else.