I think this is an accurate analogy of life experience. It's strange that you don't wake up from a nightmare but to a reality of a nightmare. monsters and bad things are not in your dreams, they are in your reality. Life is often the nightmare. There are certain things that can never be, things or people you can never recover, time you can not get back, injustice that can not be undone, things you can never change and dreams that will never happen or past the point of possibility. There are so many deaths, small and big, in life. You start off so full of light, love, trust and hope, even believing the universe will be conspiring to ultimately be fair but you find out that is not true and there are no guarantees. that the very act of giving that beautiful, innocent and inspired trust was ultimately undeserved as well as ironicly the undoing. the strangeness of knowing the universe you thought was your home did not deserve your trust at all. It violates all that you hold dear and your soul. After a time, you can end up thinking what is the point anymore. Your little space of your life and your dream of a dream crushed beyond the point of no return, you can only then admire other people's happiness or luck or fulfillment like alice through the looking glass. I agree though with the wisdom that you should not get attached to this life where everything and anything can be stolen, destroyed, lost, decay, killed and even your very life. There are never any guarantees.