Just ignore the people who keep saying negative about bitcoin, that's what I am doing. Just ignore them, they are just a distraction. I said to myself that one day, you'll be needing my help even you turned me down in the past. I have so many debts last year snd I paid them one by one because of my income in bitcoin and bounties. Then, those who rejected me, to lend money, Godbless them. I have more money than they have right now.
Ofcourse, i will present all what they want to change their perspective about bitcoin. I tried it one time to convince my friends to invest in bitcoin, id say to them that it will give you profit at the end of the day, but still theyre not convinced. They say that there is no possiblity in bitcoin and investing on it is dangerous.