Leave your parents alone.

Leave them alone with their crap and stop blaming them for your own misery, unless you really want to keep feeling miserable. Stop assuming, even in your dreams, that your parents still owe you something or can keep you from something if you are over 18. If someone is "holding you back" from something, it's you. This is your fear of growing up, making choices, and taking full responsibility for each of your decisions.