Bitmain supported BCH and they even offering it as payment accepted coins only. So I'm sure that BCH will not simple die or go away.

http://www.trustnodes.com/2017/10/01/bitmain-now-accepts-bitcoin-cash-latest-mining-hardware

But since its just another altcoin, it will remain in the public just like hundreds of coins in it existence. BCH is even in the top #5. So it will remain in the market, although not much backing from the community. So we can hate it as much as we want, but it will still last as long as there as trading/hodling the coins.(although minimal).