Looking at the rapid growth the Croptocurrency world is experiencing right now, with new and promising Tokens (ONL, ATFS, BERRY etc) being introduced on regarly basis. I actually have a strong confidence that cryptocurrencies would get worldwide acceptance in the nearest future, and with Bitcoins topping the charts of all existing Bitcoins right now, Bitcoins stands to benefit from the newborn cryptos emerging. So if you ask me, I think it is quite impossible for Bitcoin to CRASH.
So whats really your position? Will it crash or not?
ETH is the one supporting those new crypto's because of its smart contract, some are just a copy paste of the blockchain technology.
The breakdown of bitcoin can only be if bitcoin is too high in price from the rest of the crypto currency and fully manifests itself as a swollen financial bubble. Then there will come a time when, due to panic or some other reasons, bitcoin will start to lose demand for it and its popularity, after which the situation will become uncontrollable. True, even in this case it can simply fall in price to the level of depreciation, but it can stay afloat. We still do not know the possibilities of crypto currency and bitcoin in particular.