Buffett is not interested in crypto, and it is unlikely that his opinion will change.
^ It only shows we all have our own individual differences in whatever aspect of life. If Warren finds bitcoin as a not good investment so be it, it will not hurt us anyway but it may only hurt us if we force him to believe us, and continuously he will decline us. Nevertheless, some people up to these days may not still believe what bitcoins or other cryptocurrencies can bring them for they are always after a government ruled the world.