You warn them because you care. They don't believe you, are in denial... for what seems reasons that makes sense because who ever wants to believe the Dreams when they first start? Especially if they are completely different from the lives they know now. You feel the need to make a statement about denial, then claim you have 'no more fucks to give' and how you just don't see the point of sticking your head in the sand.
You may have had good intentions in wanting to warn these people about a possibility of harm. But now you're just being childish.