Welcome to the forum.
Thank you for sharing your story. I hope collecting your thoughts and writing them down and letting us know them has been cathartic for you. I am glad you are starting to realize your worth as a person. NOW-the responsible adult that you are.
You said this:
just spent HOURS cleaning house (and it's still not clean) today, therefore it's now time for the kids to trash it again so I can have something to do tomorrow morning. ;)
I just have one suggestion-if five children plus you clean for fifteen minutes while three fun songs play on the stereo, that's the equivalent of two hours-then all can have a fun treat like ice-cream with toppings, or a picnic out in the back yard, or a game. You shouldn't have to do it all. Plus, if they get used to cleaning, they will be more likely to keep it that way. Yes, I watch Nanny 911. She is wonderful, and has the most practical suggestions for a happy, well run home with no screaming or bad behavior.