I am not clear or see the obvious problem this would solve? Could someone help me understand the user story/user case for the problem this solves today for a u

I am not clear or see the obvious problem this would solve? Could someone help me understand the user story/user case for the problem this solves today for a user? I honestly have a hard time with these p2p/decentrialized/ blockchain/*xyzcoin items. After you have seen one, they all kinda cast the same shadow.