Wake me up I'm dreaming

Why does everything feel so much better when you're dreaming? Usually, in my dreams, I fantisize myself winning many Oscars and Emmys-and of course getting mobbed by many fan clubs. Why oh why do dreams have to taunt us so much? Why can't we sleep away all our problems? Sometimes, I'd rather have a horrible and scary dream than one where I get lost and wrapped up in amazingness. Dreams are very frightening things-in more than one way. But a better question is: Why and how do we think these things? That's what I'd like to know!