Bitcoin Cash is worth holding for long term. This coin will be better and better in the field of payment.
I think that in the long term Bitcoin Cash will fall. Because Bitcoin will always remain the first coin.
But the only thing that places Bitcoin Segwit in the
Bitcoin position is it is the chain with the most accumulated proof of work. When Bitcoin Cash surpasses Bitcoin Segwit in that measure, then Bitcoin Segwit will
cease being Bitcoin, and Bitcoin Cash will
become Bitcoin. Just as satoshi designed.
Sure, it is arguable whether that event should ever come to pass. But them's the breaks.