First thing, bitcoin can't die overnight.
Second, people are getting crazy about all cryptocoins not only bitcoin so this trend might remain same if there will be no more bitcoin.
People are investing in bitcoin because it has limited supply and no any government can shutdown bitcoin network. People find it much safer to store their wealth in bitcoin than in their local banks.
true. in the first place bitcoin will not die if you will only base at this moment. For me as long as there is cryptocurrency there is a bitcoin. how can a number 1 cryptocurrency died instantly? as long as people are still supportig bitcoin it will not die.