Bitcoin Cash is worth holding in the medium and long term, because its payment technology is more powerful. In fact, BCH really realized the vision of BTC.
P2P electronic cash is the ultimate killer app and its not BTC core.
Bitcoin Cash is a bitcoin at first. It was forked because of the shortcomings of bitcoin on transactions. Backed by powerful, huge miners and traders. It may looked like just another coin right now. But take a look at the price of BCH. It's similar to the steps made by bitcoin. Soon, it will be worth similar to bitcoin. Infrastructure are being layed out every where.