As we change our point of view, what appears as "real" to us will also change. A changing world cannot ultimately be "real", for the definition of "real" is that of a self-perpetuating state, hence changeless. Having said that, has our entire experience been "real" to begin with? No, as all is consistently shifting, anything we ever experience is never given more reality than that of a dream. We are eternally dreaming.

So either ALL exists, or NOTHING exists ;)