Even I think bitcoin cash is not worth to holding, it's better to sell it now before its price falls hard.
I'm not sure the price of bitcoin cash will increase.
I'm of the same opinion. Bitcoin cash might stay in the market for some time but it doesn't have any speciality for it to survive for long eventually it has to be dumped. Bitcoin cash doesn't have a good team of dev and nor does it have a good number of supporters. So I agree bitcoin cash is soon going to prove as bitcoin crash.
You can say Bitcoin may not reach it full potential for now but in a right time and with the support of people through it it may have more development that as expected. We can see the beginning of the further development and future of Bitcoin with start of the fork or the splitting of Bitcoin just like how ethereum deal with and look ethereum now there are some speculation that it may replace Bitcoin because of its price movement just imagine how it may effect Bitcoin on its development as whole.