Your grandmother just does not know what blockage is. Try to explain to anyone this technology: friends, relatives. What kind of technology is it. They will consider you a fool? or do not attach importance, just another technology.
Here I completely agree. If you retreat, at least a week from this sphere, it turns out that this is not so important. There are many other things in the world, and the development of blockchane technology can be equated to the appearance of seals and stamps. Yes, it affects us, but not so much, while you are doing this topic.