if the world of cryptocoin does not make money then people will not do this job. I'm sure the activity of buying and selling in bitcoin will be destroyed. the world without our money goes back in time, where we exchanged goods to meet our needs. we will often be confused to buy something with valuable goods. because the use of money does not exist.
i think that it won't make real money dissapear because it is a online currency and not everyone is using online money so that means that it will never disappear.I hopt at least that it stays because then i can buy shit i want. So i keep investing into bitcoin.