Dreams... the reason to live?

this is just the thing which i have been thinking about... but then are they really worth it? Or just another thing to hold your fancy till u r alive, or better still, till u loose some of the best days of your life just dreaming... But then my dilemma is this... my best days are the once which I've spent dreaming... pure dreaming frenzy. They aren't planned or anything, but then they just happen... One of the few odd days u see... but then I just believed so much in my dreams that I never wanted to wake up to reality... just don't feel that reality is worthy of it. Or is the contrary true? Its very subjective afterall... but then its nice to drift once in a while, & to be exact, its been a long while since I've last lost myself to my dream world. Its good fun, though, its difficult to find out how good are they really?