I don't think bitcoin will be that high in value for a long time but i think that the bitcoin won't die anytime soon. So i think it is still save for you to invest in bitcoin.
But you should wait for the value to drop first so you will make sure you won't lose money.
yes you are right that bitcoin will survive but forever? i am not sure, bitcoin is now the most popular cryptocurrency but if someone made out new cryptocurrency and which defeated the price of bitcoin than bitcoin will must consider die because people will must invest in that new cryptocurrency.