I totally agree with you, Without bitcoin cryptocurrencies all coins are nothing. Bitcoin is the base for all cryptocurrencies. Ethereum is a very good coin and I always mention that If BTC is o. 1 the Ethereum is 2nd. But at this moment, some people are trying to create a big hype about Ethereum, but that is too much. If bitcoin will die the not only ethereum rather all crypto coin will die
   

Everything on the internet is hackable, but the question is , will it be easy, I am sure bitcoin should be hackable but wont be that easy.. Minor hacks like targeting a person and stealing his private keys should be the easiest but hacking the network .. thats a story for another time

Technically, bitcoin will be alive, as long as several computers with the program running on them continue to work. That is, to die, something extraordinary must happen, and most likely, if the community does not destroy itself from greed or negligence, in the coming years it will remain the main crypto currency.