You are right. The situation with the mining is very sad and, if it continues like this, then the miners will stop their work and the blockchain will no longer comply with its basic principle of operation. Everyone understands this and the way out of the situation will be to develop new coins with a good reward or increase the reward for work  miners in already existing crypto currencies. But it can be said for sure that without mining, the main functions of the crypto currencies will be violated and therefore mining will never disappear.