Generally everybody have of opinion of bitcoin or cryptocurrency, I guess that's why some people do not care to invest or trade, most people also had once invest and failed probably loss their money. All this makes different opinion of bitcoin to them why it should not stay.
Countries also have view it in different direction of affecting economy and capitalism system, some sees it in a positive direction while others sees it as negative threats to the country's economy.
But most believe the bitcoin to be best when considering many other offers. We see what other can't see in bitcoin, we trust bitcoin to improve standard of living, we keep buying for the project to survive threats. But we never ask what if the whole stuff varnish overnight?
What is your reason why bitcoin should stay in the next 100 years! when the government are worried about it?
Maybe our opinions about bitcoin can give hedge to the government.
I want Bitcoin to stay because of its unique characteristic of decentralization & limited supply of 21 Million which is a strong reason to consider Bitcoin as an attractive hedge against fiat currencies, which are controlled by central banks and they can be printed as much as the authorities want. That is the reason all fiat currencies with no exception, have gradually lost their purchasing power overtime. Therefore, Bitcoin is a promising alternative to traditional currencies.