Maybe others people don't know about bitcoin because maybe they don't any idea in bitcoin, they lack in knowledge and explaining is the best way to convince people who don't like bitcoin. Well i try to convince them and explain for them very well. Explain to them the importance of bitcoin in our daily lives and especially the benefits of bitcoin. Who knows in this way of they will convince to invest in bitcoin, and they begin also investing in bitcoin because they educate already about bitcoin. Don't give up to explain people and you must show the prove that bitcoin is a big help to our needs and a good source of income.
But there are really people who are close-minded about bitcoin even we have provided them some proofs for them to believe and be encourage.So the best solution is to ignore them.Never mind their bad words towards bitcoin.After all we don't really owe them explanations.Just let them see our hard earned coins and maybe in the next days,their perception on bitcoin might changed.