I think regrettable that Bitcoin cash will replace Bitcoin in the future (1-2 years), at least in price
Bch cash is an improved version of btc, and has 8mb blocks, in the future, if cryptos uses in day of day of real life, btc isn't optimized to make so transactions per second, and i'm afraid.
No matter what the speed of transactions bitcoin and Bitcoin cash. Bitcoin is the founder of the market and he will always be the first ! Look at the capitalization and you will understand! On account of the fact that bitcoin will replace traditional currencies, I think that this will not happen and I do not see the point ! I think that traditional currencies and cryptocurrencies can exist and work as a whole !