Normally, those people would never wake up from their fantasy worlds. They live meaningless lives. They waste their precious days over nothing. No matter how old they get, they'll continue to say, "My real life hasn't started yet. The real me is still asleep, so that's why my life is such garbage." They continue to tell themselves that. And they age. Then die. And on their deathbeds, they will finally realize: the life they lived was the real thing.
This is like the third quote in a row I've gotten with the same general message that you shouldn't waste your life... is the universe trying to tell me something??