March 27th

So I have been avoiding the ending of this poem like the plague.  I have seen how the speaker wants to be an adult and move away from his childhood, but the reference to the moon and the mirror comes out of no where for me.  I understand that the mirror has to do with him being able to see into the room and that because the "door halved the dresser mirror" it must be open.  Which goes back to my point yesterday of why would they leave the door open?  That honestly just seems wrong to me.  I do not understand why they would want their children to experience any of their sexual experience.  I think this just shows how bad of parents the speaker had.  I could be reading this completely wrong though.