from the illustration of the image according to my understanding is a natural disaster.
will bitcoin bring disaster to the world ??
No, that is not. Bitcoin are giving to us a big opportunity and can be changed our lives and of course it will not bring disaster. If all people are believe that Bitcoin will be the world currency, the OP says is the possible will may happen to our world.
Yes, Bitcoin is very useful to us because its source of extra income, bitcoin will change our life better to become brighter and wealth. Bitcoin giving us a chance and opportunity.