I doubt that BTC will ever disappear. The community is here for the long term, despite the value of BTC, which is relative.
It will not disapper but BTC can lose value later and it's the same things, people just wont deal with cheap currency when you wasting more money to earn bitcoin.
it's exactly what happened in 2009 ago when people underestimate about bitcoin.
only few people trust in bitcoin and some people do random gamble to invest their $100 for $100,000 later and it has happened.
so do you want say if the price down to $50 in this year you will leave? you would not think the price won't back to $400? bitcoin would not dissapears in the very near future.