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.
Well the truth is that I want Bitcoin to stay because I'm making some money from it and aso earning a living through it as well.
On the other hand, one of the major reason I want Bitcoin to stay for as long as possible is the ease and possibilities of sending money across Nations swiftly with relatively very high rate above every other method of sending money across Nations.
And aiding the previous reason above, I think this is a general one and also one of the core purpose of Bitcoin which is it's decentralization and the ability of staying very private while transacting without having anyone tail you or question how money is been sent and received through you.