Basing on the market today bitcoin is dumping hard and also the alt coins. I guess without bitcoin the other coins will be gone too. What do you think?
And why should other types of crypto currency disappear if bitcoin disappears? It may be that in this case they will start to develop freely, as the price binding to bitcoin will disappear.
Each coin, especially those that are separated from bitcoin, can exist completely independently. For example, why should ethereum disappear in this case? This coin, in my opinion, can now do without bitcoin. We praise too much bitcoin, which even the function of money can not normally perform.