Thank you for your time. I realize it is a very immature thing for me refusing to clean my room, but I am in a tough situation. I have lost a lot of respect for my mom since she started acting so ridiculous. She doesn't attend to any of her responsibilities around the house.
That does not mean YOU should not do so as well. I assume she works? Does she feed you or put clothes on your back? Do you have a job and pay for anything?
Unless you are self supporting, you should be thankful to have her support.
And if you do not respect her, then leave.
In fact, my room is the cleanest room in the house. The other thing is, I dont really WANT to live here anymore. I just dont want her to get into one of her angry rages when I do leave and get rid of / throw out of stuff.
Take your stuff with you. If she damages anything you DO leave behind, then you can sue her for any such damages. But, unless you have furniture which YOU purchased with YOUR money, I doubt you have a whole lot that cannot be taken with you provided you have a couple of friends with cars or someone with a pickup.
Note that things your mom has allowed you to use while you lived there does no mean they are yours to take. So, unless you bought it with your own money, she is doing you a favor if she lets you leave with it.
Its more my stuff Im worried about now than myself, becasue I HAVE a place to go.
It's a long weekend, and I am sure you have friends with cars. Do it over the next 48 hours and you should be fine and dandy.
P.S. No, I have never financially contributed to the rent or utilities of the home. I have not neglected ALL my chores, just a few that deal with my personal space.
Then, is it any wonder that she might be angry? You are 21. You are an adult. If you are in "university" then you are, ostensibly, intelligent. Thus, one might assume you are capable of demonstrating some level of responsibility and common sense.
It amazes me with my own kids (two of which are teenagers) how they are so often surprised that their mother gets angry with them, yet, they seem to go out of their way to do the stupid stuff that gets her angry! Then they are surprised! When, in reality, a few minutes of simple, short activity would make her happy as a lark and gain them all manner of benefits. Instead, they seem to opt for the conflict and then have the audacity to be stunned when mom is miffed!

I don't get it ...
If my kids are to ignore any responsibilities when they hit 18, they're out the door. I have made it very clear to them that I am providing them with a roof, clothing, food, and care because I must. After they are 18 and out of high school, I will do so because I wish to do so, but that care comes with strings attached. Failure to abide by said strings (college, job to pay for gas and insurance on a vehicle and a small amount of room and board, curfew, etc.) will result in the big boot out the door.
If you have a place to go, make the arrangements and do it. If you can make amends with mom, consider it. Living on your own can suck - especially if going to school at the same time. I did it at age 22. I thought I would show mom and dad that I was NOT going to live under their rules anymore while in college! Nope! I was an adult, darn it! ... Wow! What a shock reality was. Where I once had money to go out to eat, go to an amusement park, a movie, and even get gas, I was now barely able to make ends meet ... dinners of Top Ramen, rice, mac & cheese, and whatever I could manage to snag at work (I worked at a restaurant) were the common fare. Who knew that toilet paper, toothpaste, my share of utilities, etc., would be so expensive?!
Well, good luck, and think hard about your options ... they coul have long lasting effects.