You have never awakened from a dream and there was nothing around you to wake you up?<quoted text> Just to,point out how wrong you are you said...
"You go to sleep and your mind enters a different reality. "
You go to sleep and your mind "exits" reality. There is no refuting this fact.
You have lost sensory input from reality, so you mind creates a false reality.
One that isn't real you know a dream. But it isn't reality in any way shape or form.
Something must have been real enough to you.