Free post~ is there really such a thing as being completely sane?

As you walk through the halls you soon notice that no one is around. The walls are white, and there's no sign of any doors. You wander aimlessly, and just as you begin to panic, you turn the corner to come to a tall white door with black patterns swirling around it. The lines almost seem to dance, but you haven't abandoned sensible thinking. Well you not quite yet.
Seeing that this may be the only way out, and you can't even remember how you got here, you tug on the iron door handle. Now there is no mistaking the movement of the black lines, they move elegantly to write in script, Push. Unsure what to think of the door, you place both hands on the side of the door and crack it open.
You can't process what you see, so you push the door open and step through. You let the door fall closed, and even though you didn't look, it was no longer there. The floor you stand on is impossible to see under a layer of something that looks like clouds, and you can't see the walls where the room ends anywhere.
It is like a forest, it has trees and a creek and bushes. But it is unlike anything you've ever seen. Everything is white, and the leaves on the trees are lined with black. the pebbles in the creek are black and different shades of grey.
You are unsure of the floor's tangibility, so as you begin to take a step you hesitate, then become more sure of yourself. Walking around, you eventually come to a glass door, it puzzles you so you walk around it. It stands alone, its hinges seemingly attached to the air, but you feel compelled to open it. You push the door open and suddenly your standing on the sidewalk in front of your house. This time you turn to see the door, but there is no door. Now you are no longer sure that anything that had happened actually happened and begin to question your sanity. You tell no one, for fear of being sent to a therapist, and forever remember the day you were lost in a place you will never really understand.