We do really need blockchain technology because it is not only about digital currencies - it can be utilized in various spheres of our life starting from data storage and ending with the elections system.
Do we need all those tons of altcoins? Of course no, and life will set things straight and let survive only those alts that are supported by a clearly demanded product.
All in all, I personally continue believing in the long life of blockchain and wait eagerly for all the news regarding its use in everyday life.
Many famous companies use it already, and they succeed in their business. Naturally, we need the blockchain. These technologies will help the counties to improve their economy and make the life of their people better.