I have a 3 yo dd and I could have written most of your post. Unsupervised, she is a hurricane. All our walls have crayons, markers and paint jobs. Our floors have stickers that won't peel easily. She spent an entire afternoon peeling the wallpaper in her room when I thought she was taking a nap. We hardly have any furniture as she devised a way to use any and each piece dangerously. Even when we are supervising her and ask her to stop, she either bombards you with a million why nots or sweet talks you or shows anger. The only thing that has helped me keep my sanity is going to work everyday outside the house. She goes to preschool in the am and we have a nanny watch her in the pm. She behaves very differently with them and actually follows their rules. I joke that I go to work to relax. Weekends, I am a dead zombie by Sunday night.:) I am really hoping it would get better as she becomes older. You have my sympathy.