When it comes to the issue of what is holding back the mass adoptions of BCH, lots of salient factors play significant negative roles in answering this particular question.
Among the factors, the cogent ones are highlighted as follows:
There are not many traditional retail businesses that accept BCH as a payment option, they accept fiat currencies which is their status quo in lieu.
While the above mentioned issue is quite important to enable the BCH holders use and transact with it conveniently, the masses must actually have the easiest ways to access BCH in the first place. Accessibility to BCH worldwide is still lopsided.
The 2017 bull market in cryptocurrencies brought many interested new retail investors into the market, hopping to profit off of the price bullish at the end of the year.
The ATH of BTC was $20,000 and that of BCH was $3,785.82 as of December 2017.
Many investors mortgaged their houses and invested in cryptocurrencies during the peak of the hysteria, only to experienced significant losses of over 50% during the 2018's bearish market.
It is these series of losses and the very real volatility allied with it that instill fear among potentially new BCH investors and distract them from giving it a try.
To be clear enough, it is not just volatility that instill so much fear, but negative volatility. This makes retail investors lose significant amount of money quickly.
Almost all investments have some degree of risk and volatility, but that of cryptocurrency is huge and nothing significant has been done to salvage the retail masses from this concern.
Another aspects of fear in consideration are exchange thefts, scam ICOs and lack of regulatory clarity. All of these negative factors hinder potential new investors from adopting BCH.
It is relative that every industry would have challenges educating the masses about its advantages, the learning curves for cryptocurrencies are particularly steep due to their technical jargons. The cryptocurrency market is currently immature and inefficient to educate new investors thoroughly. Those who we regard as "experts and gurus" in this field have no total solutions regarding the simplicity of educating potential new investors. Invariably, BCH is at the receiving end of this impotency and lacuna.
To achieve mass adoptions for BCH and sustain it, the cryptocurrency industry and market must fill those lacunas with reasonable and lasting solutions.