doctors save lives, firemen make our homes safe, astronauts explore the outer space etc...
bitcoins do nothing except pushing numbers around to make the early adaptors rich.
No one is forcing anyone to use Bitcoin. No one (that I know of) is trying to trick people into using them. (Most newbies who post on this forum are told to fuck off if they don't like the idea.)
And yet the price of a bitcoin is almost $20. How do you explain this? Is every single person who's bought or mined a bitcoin just an idiot? Because no one is coercing them into using Bitcoin, and yet they are.